blackhead

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noun black·head \ˈblak-ˌhed\

Definition of blackhead

  1. 1 :  a small plug of darkened sebum and dead skin cells that fills a pore of the skin especially on the face —called also comedo, open comedo — compare whitehead

  2. 2 :  a destructive disease of turkeys and related birds caused by a protozoan (Histomonas meleagridis) that invades the intestinal ceca and liver

  3. 3 :  a larval clam or mussel attached to the skin or gills of a freshwater fish

Circa 1837

First Known Use of blackhead

circa 1837


BLACKHEAD Defined for English Language Learners

blackhead

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noun black·head \ˈblak-ˌhed\

Definition of blackhead for English Language Learners

  • : a small, inflamed area on the skin with a dark spot in the middle


BLACKHEAD Defined for Kids

blackhead

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noun black·head \ˈblak-ˌhed\

Definition of blackhead for Students

  1. :  a darkened bit of oily material blocking a pore in the skin


Medical Dictionary

blackhead

play
noun black·head \ˈblak-ˌhed\

Medical Definition of blackhead

  1. 1:  a small plug of sebum blocking the duct of a sebaceous gland especially on the face—compare milium

  2. 2:  a destructive disease of turkeys and related birds caused by a protozoan of the genus Histomonas (H. meleagridis) that invades the intestinal ceca and liver—called also enterohepatitis, histomoniasis, infectious enterohepatitis



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