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Definition of Hair
1. Noun. A covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss. "Each hair consists of layers of dead keratinized cells"
Generic synonyms: Body Covering
Terms within: Hairline, Part, Parting
Group relationships: Integumentary System
Terms within: Ceratin, Keratin
Derivative terms: Hairy
2. Noun. A very small distance or space. "They lost the election by a whisker"
Generic synonyms: Small Indefinite Amount, Small Indefinite Quantity
3. Noun. Filamentous hairlike growth on a plant. "Peach fuzz"
Generic synonyms: Enation, Plant Process
Specialized synonyms: Stinging Hair, Beard
4. Noun. Any of the cylindrical filaments characteristically growing from the epidermis of a mammal. "There is a hair in my soup"
Group relationships: Mammal, Mammalian
Generic synonyms: Filament, Filum
Specialized synonyms: Ingrown Hair
Derivative terms: Pilar
5. Noun. Cloth woven from horsehair or camelhair; used for upholstery or stiffening in garments.
6. Noun. A filamentous projection or process on an organism.
Generic synonyms: Appendage, Outgrowth, Process
Derivative terms: Hairy
Definition of Hair
1. n. The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the head or for any part or the whole of the body.
Definition of Hair
1. Noun. A pigmented keratinaceous growth that forms thin spires and grows out from a follicle on the human head. ¹
2. Noun. The collection or mass of such growths growing from the skin of humans and animals, and forming a covering for a part of the head or for any part or the whole body. ¹
3. Noun. (context: zoology countable) A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth. ¹
4. Noun. (botany countable) A cellular outgrowth of the epidermis, consisting of one or of several cells, whether pointed, hooked, knobbed, or stellated. Internal hairs occur in the flower stalk of the yellow frog lily (Nuphar). ¹
5. Noun. (obsolete) Haircloth; a hair shirt. ¹
6. Noun. Any very small distance, or degree; a hairbreadth. ¹
¹ Source: wiktionary.com
Definition of Hair
1. a threadlike growth [n -S]
Medical Definition of Hair
1.
1. The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the head or for any part or the whole of the body.
2. One the above-mentioned filaments, consisting, in invertebrate animals, of a long, tubular part which is free and flexible, and a bulbous root imbedded in the skin. "Then read he me how Sampson lost his hairs." (Chaucer) "And draweth new delights with hoary hairs." (Spenser)
3. Hair (human or animal) used for various purposes; as, hair for stuffing cushions.
4.