hair

noun, often attributive
\ ˈher How to pronounce hair (audio) \

Definition of hair

1a : a slender threadlike outgrowth of the epidermis of an animal especially : one of the usually pigmented filaments that form the characteristic coat of a mammal
b : the hairy covering of an animal or a body part especially : the coating of hairs on a human head
3a : a minute distance or amount won by a hair
b : a precise degree aligned to a hair
4 obsolete : nature, character
5 : a filamentous structure that resembles hair leaf hair
in one's hair
: persistently and annoyingly in one's presence can't work with you in my hair all day
out of one's hair
: out of one's way : not in one's hair keep the children out of his hair for a while

Illustration of hair

Illustration of hair

hair 1a: 1 shaft, 2 sebaceous gland, 3 epidermis, 4 dermis, 5 hair follicle, 6 bulb, 7 papilla

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Other Words from hair

hairless adjective
hairlessness noun
hairlike \ ˈher-​ˌlīk How to pronounce hairlike (audio) \ adjective

Examples of hair in a Sentence

He plucked a hair from his arm. There are dog hairs all over my coat. The hair on her arms is blond. He has a lot of hair on his chest. He got his hair cut last week. He has a thick head of hair. a balding man who is losing his hair He won the race by a hair. He was a hair off on the count.
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Recent Examples on the Web Trump was particularly pleased with a young boy with a distinctly Trump head of hair and a partner who did her best Mrs. Trump impersonation. Staff And Wire Reports, USA TODAY, "Melania Trump, president host hundreds at socially distant Halloween celebration," 26 Oct. 2020 Zuck warned me to aim carefully through my scope and pick a tuft of hair on the deer’s side to shoot at. Oliver Staley, Quartz, "MeatEater’s Steven Rinella is helping America rethink its relationship with hunting," 23 Oct. 2020 Both the iPhone 12 and 12 Pro were better at picking up more details, from imperfections in someone's skin to individual strands of hair in my puppy's coat, when compared to photos taken on the XR. Kaya Yurieff, CNN, "iPhone 12 review: Upgrade for the camera, not 5G," 22 Oct. 2020 Wheeler’s decision was specifically about fine particulate matter, or PM2.5, microscopic solid and liquid droplets less than one-thirtieth the width of a human hair. Gordon Russell, NOLA.com, "EPA refuses to reduce particulate pollution, linked by scientists to coronavirus deaths," 21 Oct. 2020 Wheeler’s decision was specifically about fine particulate matter, or PM2.5, microscopic solid and liquid droplets less than one-thirtieth the width of a human hair. Lylla Younes, ProPublica, "The EPA Refuses to Reduce Pollutants Linked to Coronavirus Deaths," 21 Oct. 2020 Byrne, who is sixty-eight—and still both freaky and handsome, albeit now with a cockatoo-like puff of white hair—is less a rock star these days than the ringleader of a Broadway company. Rachel Syme, The New Yorker, "David Byrne’s Gray Suits, from “Stop Making Sense” to “American Utopia”," 20 Oct. 2020 As a point of reference, a single strand of hair is 50 microns. Allen Foster, chicagotribune.com, "AirDoctor review: Does this top-of-the-line air purifier’s performance justify the price?," 17 Oct. 2020 Thousands of times smaller than the width of a human hair, the coronavirus spreads mainly through respiratory particles in the air. National Geographic, "invasion and response," 14 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hair.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hair

before the 12th century, in the meaning defined at sense 1a

History and Etymology for hair

Middle English, from Old English hǣr; akin to Old High German hār hair

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Time Traveler for hair

Time Traveler

The first known use of hair was before the 12th century

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Statistics for hair

Last Updated

29 Oct 2020

Cite this Entry

“Hair.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hair. Accessed 30 Oct. 2020.

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More Definitions for hair

hair

noun
How to pronounce hair (audio)

English Language Learners Definition of hair

: a thin threadlike growth from the skin of a person or animal
: a covering or growth of hairs
: the covering of hairs on a person's head

hair

noun
\ ˈher How to pronounce hair (audio) \

Kids Definition of hair

1 : a threadlike growth from the skin of a person or animal She pulled out a hair.
2 : a covering or growth of hairs I got my hair cut.
3 : something (as a growth on a leaf) like an animal hair
4 : a very small distance or amount I won by a hair.

Other Words from hair

haired \ ˈherd \ adjective a long-haired dog
hairless \ ˈher-​ləs \ adjective
hairlike \ -​ˌlīk \ adjective

hair

noun, often attributive
\ ˈha(ə)r, ˈhe(ə)r How to pronounce hair (audio) \

Medical Definition of hair

1 : a slender threadlike outgrowth of the epidermis of an animal especially : one of the usually pigmented filaments that form the characteristic coat of a mammal
2 : the hairy covering of an animal or a body part especially : the coating of hairs on a human head

Other Words from hair

hairlike \ -​ˌlīk How to pronounce hairlike (audio) \ adjective

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Comments on hair

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