Illustration of hair
- 1 shaft
- 2 sebaceous gland
- 3 epidermis
- 4 dermis
- 5 hair follicle
- 6 bulb
- 7 papilla
often attributive
1
2
3
a
: a minute distance or amount
won by a hair
b
: a precise degree
aligned to a hair
5
: a filamentous structure that resembles hair
leaf hair
see also:
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.
Recent Examples on the Web
The duo is designed to soften hair and strengthen strands while (obviously) smelling really good.
—
Kaelin Dodge, InStyle, 6 Mar. 2026
With the use of these unique materials where ions move freely even under electrical load, the team shrunk these thermometers to a mere square micrometer — thousands of times thinner than a human hair.
—Mrigakshi Dixit, Interesting Engineering, 6 Mar. 2026
The models who went all the way were the ones who ceded to Banks’s worldview, who agreed to have their hair dyed and their teeth messed with and their bodies altered.
—Sophie Gilbert, The Atlantic, 6 Mar. 2026
Nearby, Ella Dalton stares into a copy of Normal People by Sally Rooney, and Mahi Kabra lounges by the hair-washing sinks holding A Little Life by Hanya Yanagihara.
—Arden Fanning Andrews, Vogue, 6 Mar. 2026
See All Example Sentences for hair
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Kaelin Dodge, InStyle, 6 Mar. 2026
With the use of these unique materials where ions move freely even under electrical load, the team shrunk these thermometers to a mere square micrometer — thousands of times thinner than a human hair.
—Mrigakshi Dixit, Interesting Engineering, 6 Mar. 2026
The models who went all the way were the ones who ceded to Banks’s worldview, who agreed to have their hair dyed and their teeth messed with and their bodies altered.
—Sophie Gilbert, The Atlantic, 6 Mar. 2026
Nearby, Ella Dalton stares into a copy of Normal People by Sally Rooney, and Mahi Kabra lounges by the hair-washing sinks holding A Little Life by Hanya Yanagihara.
—Arden Fanning Andrews, Vogue, 6 Mar. 2026
See All Example Sentences for hair
Cite this Entry
“Hair.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hair. Accessed 11 Mar. 2026.
Copy CitationKids Definition
hair
noun
ˈha(ə)r 
ˈhe(ə)r
1
a
: a slender threadlike growth from the skin of an animal
especially
: one that usually contains coloring and forms part of the characteristic coat of a mammal
b
: a covering or growth of hairs of an animal or a body part
2
: a tiny distance or amount
won by a hair
3
: a threadlike structure that resembles hair
leaf hairs
haired
adjective
ˈha(ə)rd,
ˈhe(ə)rd
hairless
adjective
ˈha(ə)r-ləs,
ˈhe(ə)r-
Medical Definition
hair
nounoften attributive
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
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