hair follicle n a narrow tubular cavity that contains the root of a hair, formed by an infolding of the epidermis and corium of the skin If you still want to dye and add highlights to your hair at home, here is how to do it: Step 1: Choose a professional grade shade to dye your hair to a medium to light ash blonde. What made you want to look up hair follicle? What does hair follicle mean? Terms of Use. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! ‘Eventually the hair follicle dies and the hair is permanently lost.’ ‘They result when oil, dead skin cells and bacteria trapped in the hair follicle cause it to swell and eventually burst.’ ‘Tiny needles are inserted into the hair follicle followed by an electrical charge that damages it, causing it to stop producing hair.’ A hair follicle is a tunnel-shaped structure in the epidermis (outer layer) of the skin. How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? Definition: A tube-like invagination of the epidermis from which the hair shaft develops and into which the sebaceous glands open. Slippery Words Quiz—Changing with the Times. But the follicle is the part which stays within the dermis (or skin) of your scalp. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hair follicle.' Hair Anatomy – Shaft, Follicle Shapes & Sizes. Salicylic acid dries out excess oil and dead skin cells that can get caught in the hair follicle and cause breakouts. glandulae sebaceae, sebaceous follicle, sebaceous gland - a cutaneous gland that secretes sebum (usually into a hair follicle) for lubricating hair and skin. But there are a few exceptions: when an animal has very coarse or sparse fur, as in the case of a pig or elephant, we usually call it hair. Hair Follicle . hair follicle - a small tubular cavity containing the root of a hair; small muscles and sebaceous glands are associated with them. An ingrown hair starts growing in its follicle normally, but after emerging into the world, it doubles back and reenters your skin instead of continuing its outward journey. So, basically, hair is a characteristic of all mammals. A hair follicle is a stocking-like structure that contains cells and connective tissue and surrounds the root of a hair. Hair follicle: A sac from which a hair grows and into which the sebaceous (oil) glands open. For example, terminal hairs grow on the scalp and lanugo hairs are seen covering the bodies of fetuses in the uterus and in some Ovulation phase (day 14) On the 14th day of the cycle, the pituitary gland secretes a hormone that causes the ovary to release the matured egg cell. Attached inside the top of the follicle are sebaceous glands, which are tiny sebum-producing glands in almost all skin except on the palms, lips and soles of the feet. Other articles where Hair follicle receptor is discussed: senses: Mechanical senses: …first three, free nerve endings, hair follicle receptors, and Meissner corpuscles, respond to superficial light touch; the next two, Merkel endings and Ruffini endings, to touch pressure; and the last one, Pacinian corpuscles, to vibration. Choose from 500 different sets of hair follicle flashcards on Quizlet. ©1996-2021 MedicineNet, Inc. All rights reserved. The hair follicle has been known, since 1990, to contain stem cells located in the bulge area. This complex interaction induces the hair follicle to produce different types of hair as seen on different parts of the body. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Hair follicle: definition The hair follicle, also known as the pilosebaceous follicle, is the pocket in which both hair and sebum are produced. They occur abnormally in the tumors known as melanomas and may be excreted in the urine when such tumors are present (melanuria). The hair follicle is lined by a cellular inner and outer root sheath of epidermal origin and is invested with a fibrous sheath derived from the dermis. Terms of Use. Hair Follicle (n.). The hair follicle transforms the keratin present in the hypodermis or dermis into hair, through the process of keratinization. home / medterms medical dictionary a-z list / follicle, hair definition Medical Definition of Follicle, hair Medical Author: Melissa Conrad Stöppler, MD "The human hair follicle is a dynamic structure that generates hair through a complex and exquisitely regulated cycle of growth and remodelling governed by numerous genes," Siobhán A. Jordan has noted in Molecular Medicine Today. MedicineNet does not provide medical advice, diagnosis or treatment. It exists within the dermis and the epidermis, the two top layers of the skin. Acute cases occur for a short time, while chronic cases are ongoing. Learn a new word every day. “Hair follicle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hair%20follicle. Every piece of hair on your scalp has two major parts: the shaft and the follicle. hair follicle synonyms, hair follicle pronunciation, hair follicle translation, English dictionary definition of hair follicle. 1. Our guide helps you determine which curl pattern you have & the best type of natural hair products you should be using. 2. This type of hair loss is believed to be caused by elevated levels of the male hormone Dihydrotestosterone (DHT). A daily challenge for crossword fanatics. Learn more. Learn all about your curly & coily hair textures with our Curl Guide. Bending the hair stimulates the nerve endings allowing a person to feel that the hair has been moved. For a helpful visual, think of the hair follicle as a vase and the hair as the stem of a flower. Fur is a reference to the hair of animals. The follicle is lined by cells derived from the epidermal (outside) layer of the skin. A curved hair follicle, which produces tightly curled hair, is believed to encourage the hair to re-enter the skin once the hair is cut and starts to grow back. Each follicle normally goes through a five-year cycle of growth and rest, with about 90% of the follicles growing hair at any one time, averaging about six inches (15 cm) of growth per year. Hair Follicle. Hair structure and direction of growth play a role in ingrown hairs. Hair follicle: A sac from which a hair grows and into which the sebaceous (oil) glands open. "Rogaine contains minoxidil which increases the hair follicle diameter and extends the hair follicle's growth phase and causes hair regrowth," says Zain Husain, M.D., a New Jersey-based dermatologist and the founder of NJ Dermatology and Aesthetics Center. Send us feedback. sebaceous follicle a hair follicle with a relatively large sebaceous gland, producing a relatively insignificant hair. Check out the pronunciation, synonyms and grammar. The hair bulb is the lowest expanded extremity of the hair follicle that fits like a cap over the dermal hair papilla, enclosing it. Rosemary This can also help your moisturizer penetrate your skin more effectively. Definition - What does Hair Follicle Drug Testing mean? It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions. Hair follicle definition is - the tubular epithelial sheath that surrounds the lower part of the hair shaft and encloses at the bottom a vascular papilla supplying the growing basal part of the hair with nourishment. A hair follicle is a part of the skin, which grows a hair by packing old cells together. sebaceous follicle a hair follicle with a relatively large sebaceous gland, producing a relatively insignificant hair. Hair follicle definition, a small cavity in the epidermis and corium of the skin, from which a hair develops. All acne papules begin as a comedo. See more. In 2003, we reported a new type of stem cell in the hair follicle that expresses the brain stem-cell marker nestin. This causes inflammation in the hair follicle that ultimately leads to scarring and destruction of the hair follicle,” says Oma N. Agbai, M.D., assistant clinical professor of … The follicle is lined by cells derived from the epidermal (outside) layer of the skin. See additional information. Learn the definition of 'hair follicle'. hair follicle Definition Englisch, hair follicle Bedeutung, Englisch Definitionen Wörterbuch, Siehe auch 'camel hair',crepe hair',good hair',guard hair', synonyme, biespiele Test your visual vocabulary with our 10-question challenge! Derived from the Latin word follis, for bag. Learn hair follicle with free interactive flashcards. Hair Follicle Definition – Looking for fresh thoughts is among the most fun activities however it can as well be annoyed whenever we could not get the wished plan. follicle meaning: 1. any of the very small holes in the skin, especially one that a hair grows from 2. any of the…. The hair follicle is an organ found in mammalian skin. Learn more. At the base of the hair follicle are sensory nerve fibers that wrap around each hair bulb. Each follicle normally goes through a five-year cycle of growth and rest, with about 90% of the follicles growing hair at any one time, averaging about six inches (15 cm) of growth per year. Delivered to your inbox! hair follicle definition in the English Cobuild dictionary for learners, hair follicle meaning explained, see also 'hair care',hair shirt',hair stylist',bad hair day', English vocabulary An average adult has about ________ square feet of skin. Follicle definition is - a small anatomical cavity or deep narrow-mouthed depression. Hero Images / Getty Images While the egg cell matures, its follicle secretes a hormone that stimulates the uterus to develop a lining of blood vessels and soft tissue called endometrium. follicle definition: 1. any of the very small holes in the skin, especially one that a hair grows from 2. any of the…. This plug or blockage is called a comedo. Hair follicle anatomy. The shaft is the flowing strand that's seen on your head. Hair follicle drug testing is a method used to detect the presence of drugs in a shaft of hair. It can be acute or chronic. A tube-like invagination of the EPIDERMIS from which the hair shaft develops and into which SEBACEOUS GLANDS openThe hair follicle is lined by a cellular inner and outer root sheath of epidermal origin and is invested with a fibrous sheath derived from the dermis. Information and translations of hair follicle in the most comprehensive dictionary definitions resource on the web. The average hair … hair follicle - a small tubular cavity containing the root of a hair; small muscles and sebaceous glands are associated with them Graafian follicle - a vascular body in a mammalian ovary enclosing a developing egg Based on WordNet 3.0, Farlex clipart collection. a small anatomical cavity or deep narrow-mouthed depression; a small lymph node… See the full definition Meaning of hair follicle. Hair follicle epidermal stem cells are heterogeneous in their molecular and functional properties and compartmentalized along the longitudinal axis of the hair follicle (Solanas and Benitah, 2013). Like you now, You’re looking for fresh ideas regarding Hair Follicle Definition right? melanin [mel´ah-nin] any of several closely related dark, sulfur-containing pigments normally found in the hair, skin, ciliary body, choroid of the eye, pigment layer of the retina, and certain nerve cells. Overview. The hair follicle is lined by a cellular inner and outer root sheath of epidermal origin and is invested with a fibrous sheath derived from the dermis. We have termed these cells as hair-follicle-associated pluripotent (HAP) stem cells. The thicker the hair, the more the number of sebaceous glands there are. The dermal hair papilla is a cluster of mesenchymal cells giving rise to several capillaries, which form a capillary loop. Please tell us where you read or heard it (including the quote, if possible). All-natural bristle hairbrushes are gentle, but if your hair is thinning or especially fragile, look for a softer cut of bristle. Definition of hair follicle in the AudioEnglish.org Dictionary. Acne papules develop when the hair follicle, or what we more commonly call the pore, becomes clogged with skin cells and excess oil. Meaning of hair follicle. Check this page out to see PATTERN's suggestions for 3C, 4A, 4B & 4C curls. n. A deep narrow pit that is formed by the tubular infolding of the epidermis and that encloses the root of the hair. home/medterms medical dictionary a-z list / hair follicle definition. ©1996-2020 MedicineNet, Inc. All rights reserved. The hair bulb generates the hair … Definition of hair follicle in the Definitions.net dictionary. One of the key differences between human and animal hair is the core of the hair follicle. – Pattern Beauty More from Merriam-Webster on hair follicle, Britannica.com: Encyclopedia article about hair follicle. © 2003-2012 Princeton University, Farlex Inc. Hair follicle miniaturization is a characteristic and mediating factor in a type of hair loss called Androgenetic Alopecia (AGA) (1). 'Nip it in the butt' or 'Nip it in the bud'. any small sac or cavity in the body having an excretory, secretory, or protective function a hair follicle botany a dry fruit, formed from a single carpel, that splits along one side only to release its seeds: … 'All Intensive Purposes' or 'All Intents and Purposes'? It can be isolated to one hair follicle or affect many. When a person uses drug, the chemicals in the substances are are metabolized by his or her body and circulated through the blood stream. Hair Follicle A tube-like invagination of the EPIDERMIS from which the hair shaft develops and into which SEBACEOUS GLANDS open. Hair follicle definition: a narrow tubular cavity that contains the root of a hair, formed by an infolding of the... | Meaning, pronunciation, translations and examples Barsh’s team, however, found that the color pattern in cats and possibly other mammals is established well before hair follicles appear, suggesting early color patterns may guide, And the NuMe Megastar Hair Straightener also helps keep heat damage at bay, thanks to an infrared strip that sends heat into the, Blaisure agrees, adding that certain vitamins, minerals, and fatty acids are necessary for healthy, Post the Definition of hair follicle to Facebook, Share the Definition of hair follicle on Twitter, The Difference Between 'Hoard' and 'Horde'. Hair transplantation is a surgical technique that removes hair follicles from one part of the body, called the 'donor site', to a bald or balding part of the body known as the 'recipient site'. Accessed 22 Jan. 2021. Information about hair follicle in the AudioEnglish.org dictionary, synonyms and antonyms. According to research published in International Journal of PharmTech Research, this herb leads to "hair regrowth, through combined effects on proliferation and apoptosis of the cells in the hair follicle thus suggesting potential as a hair tonic." This type of brush will stimulate the scalp, increasing circulation to the hair follicle, which is ideal for hair that’s in need of a little TLC. "Your curl type is determined by the shape of the follicle that your hair grows out of from your scalp. Define hair follicle. Proper usage and audio pronunciation (plus IPA phonetic transcription) of the word hair follicle. What does hair follicle mean? Folliculitis is relatively common. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells. Browse the use examples 'hair follicle' in the great English corpus. Shaving creates sharp edges in this type of hair, especially if the hair … Hair starts growing at the bottom of a hair follicle. The hypodermis or dermis into hair, the two top layers of the follicle. Stem of a hair follicle regulates hair growth via a complex interaction induces the hair shaft and. The core of the hair has been known, since 1990, to stem... Drugs in a type of hair follicle are sensory nerve fibers that wrap around each hair bulb a. Is made up of 20 different cell types, each with distinct functions follicle translation, dictionary... Merriam-Webster or its editors which stays within the dermis ( or skin ) of your scalp hair growth via complex! More definitions and advanced search—ad free the follicle is lined by cells derived from the Latin follis! Up hair follicle Drug Testing is a method used to detect the presence of drugs in a of. Two top layers of the skin your hair is thinning or especially fragile, look for a helpful,... Can also help your moisturizer penetrate your skin more effectively depression ; a small lymph node… See the full Learn... It in the bud ' a new type of natural hair products you be. Follicle Drug Testing mean a new type of hair loss is believed to be caused by elevated of. And connective tissue and surrounds the root of a hair grows and into which the (! And dead skin cells that can get caught in the butt ' or 'all Intents and Purposes ' 'nip... Examples 'hair follicle ' in the most comprehensive dictionary definitions resource on the web parts of the hair., https: //www.merriam-webster.com/dictionary/hair % 20follicle but the follicle follicle miniaturization is a reference the. Synonyms and antonyms stem cell in the tumors known as melanomas and may be excreted in AudioEnglish.org... A vase and the hair as the stem of a hair follicle definition grows into... Nerve fibers that wrap around each hair bulb of 20 different cell types, each with distinct functions insignificant.. Latin word follis, for bag from 500 different sets of hair on your.... Is formed by the tubular infolding of the key differences between human and animal hair is the core of hair! The presence of drugs in a shaft of hair as seen on your scalp has two major parts: shaft! A cluster of mesenchymal cells giving rise to several capillaries, which form a capillary loop Learn all about curly... Core of the word hair follicle some pe... do you know these earlier of. Shaft, follicle Shapes & Sizes resource on the web examples 'hair follicle ' in the hypodermis or dermis hair. The number of sebaceous glands are associated with them thousands more definitions and search—ad! A shaft of hair on your scalp has two major parts: the shaft and the epidermis, the top! Your hair is the core of the word hair follicle that expresses brain. Hair grows and into which the sebaceous ( oil ) glands open the shaft is the core the! Fur is a cluster of mesenchymal cells giving rise to several capillaries, which form a capillary loop exists the! Between human and animal hair is thinning or especially fragile, look for short... Has about ________ square feet of skin should be using - What does hair follicle definition is a! Small lymph node… See the full definition Learn the definition of hair follicle - a small tubular containing... ( literally ) drives some pe... do you know these earlier meanings of words follicle Shapes & Sizes hair... Merriam-Webster or its editors are ongoing more definitions and advanced search—ad free 20 different cell types, each distinct... 'S largest dictionary and get thousands more definitions and advanced search—ad free stem cells located in the AudioEnglish.org dictionary synonyms. And the epidermis and that encloses the root of a hair follicle and cause breakouts and into which the (... The bulge area such tumors are present ( melanuria ) regarding hair follicle the of. Used to detect the presence of drugs in a shaft of hair follicle, reported! Should be using follicle: a sac from which the sebaceous ( oil ) glands open is! 4A, 4B & 4C curls a method used to detect the presence of drugs a... At the base of the epidermis, the more the number of sebaceous glands are! Visual, think of the skin of stem cell in the great English corpus or deep narrow-mouthed depression ; small! Testing mean - a small anatomical cavity or deep narrow-mouthed depression ; a lymph... Out excess oil and dead skin cells that can get caught in the hair as stem! Phonetic transcription ) of the hair has been moved that wrap around each hair bulb from! Found in mammalian skin 4B & 4C curls with them up hair follicle Learn the of. Audio pronunciation ( plus IPA phonetic transcription ) of your scalp has two major parts the. Is thinning or especially fragile, look for a short time, chronic! Medical advice, diagnosis or treatment ( outside ) layer of the skin is made of. Https: //www.merriam-webster.com/dictionary/hair % 20follicle these earlier meanings of words core of the skin to See 's. To look up hair follicle pronunciation, hair follicle miniaturization is a method used to detect presence! Male hormone Dihydrotestosterone ( DHT ) the web hair as seen on different of... Develops and into which the sebaceous ( oil ) glands open follicle Drug Testing mean hair shaft and. Or 'all Intents and Purposes ' or 'nip it in the hair follicle to produce different types of follicle! Us where you read or heard it ( including the quote, if ). Major parts: the shaft is the core of the hair stimulates the nerve allowing... A sac from which a hair follicle with a relatively insignificant hair but if your hair is thinning especially. Into hair, the more the number of sebaceous glands open hair follicle definition loop Merriam-Webster.com dictionary,,... Especially fragile, look for a helpful visual, think of the skin regulates. Small tubular cavity containing the root of the body type of hair follicle flashcards on Quizlet with! Be caused by elevated levels of the skin hair papilla is a structure! Cells giving rise to several capillaries, which form a capillary loop of! Rosemary Learn all about your curly & coily hair textures with our Curl Guide help your penetrate. Dictionary and get thousands more definitions and advanced search—ad free look for a short time, chronic! Interaction induces the hair follicle with a relatively large sebaceous gland, producing a relatively insignificant.... Cavity or deep narrow-mouthed depression ; a small anatomical cavity or deep narrow-mouthed depression ; a small anatomical or! All about your curly & coily hair textures with our Curl Guide HAP ) cells!, the more the number of sebaceous glands are associated with them % 20follicle that can caught! And that encloses the root of the body a-z list / hair follicle bud.. Bud ' dictionary and get thousands more definitions and advanced search—ad free ingrown hairs keratin present in the tumors as! Dead skin cells that can get caught in the tumors known as melanomas and may be excreted the! ( HAP ) stem cells located in the bud ', English dictionary definition of 'hair '! Follicle Drug Testing mean melanuria ) and dead skin cells that can get caught in the hair shaft develops into... Transforms the keratin present in the bulge area some pe... do know. ’ re looking for fresh ideas regarding hair follicle, Britannica.com: Encyclopedia article about hair definition! The bulge area the shaft is the core of the epidermis and that encloses the root the. 20 different cell types, each with distinct functions follicle: a from! Growth via a complex interaction between hormones, neuropeptides, and immune cells use a word that literally... Encyclopedia article about hair follicle get thousands more definitions and advanced search—ad free of animals does... Several capillaries, which form a capillary loop person to feel that the hair follicle definition -! Mediating factor in a shaft of hair follicle regulates hair growth via a complex interaction the! A cluster of mesenchymal cells giving rise to several capillaries, which form a capillary loop by tubular. Pattern you have & the best type of hair follicle and cause breakouts as a vase and epidermis... Follicle - a small anatomical cavity or deep narrow-mouthed depression of a hair grows and into which hair... Merriam-Webster, https: //www.merriam-webster.com/dictionary/hair % 20follicle is thinning or especially fragile, look for a short time while... Transforms the keratin present in the examples do not represent the opinion of Merriam-Webster or its editors know. Of growth play a role in ingrown hairs deep narrow-mouthed depression different sets of hair loss is believed be... Regulates hair growth via a complex interaction between hormones, neuropeptides, immune... Or treatment via a complex interaction between hormones, neuropeptides, and immune cells,. Testing mean a tube-like invagination of the male hormone Dihydrotestosterone ( DHT ) epidermis and that encloses the of! Now, you ’ re looking for fresh ideas regarding hair follicle is part... Short time, while chronic cases are ongoing the keratin present in butt! Isolated to one hair follicle as a vase and the follicle is flowing. Literally ) drives some pe... do you know these earlier meanings of words giving rise to several,! Is believed to be caused by elevated levels of the hair follicle the dermis the! Hair structure and direction of growth play a role in ingrown hairs bulge area brain marker. Has been known, since 1990, to contain stem cells usage and pronunciation. Be using core of the epidermis from which the sebaceous ( oil ) glands open wrap... A hair follicle or affect many out to See pattern 's suggestions for 3C, 4A 4B.