Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The primary lesion of acne vulgaris, consisting of a hair follicle that is occluded with sebum and keratin; a blackhead or whitehead.

from The Century Dictionary.

  • noun A small, worm-like, black-tipped mass, such as may sometimes be squeezed out of the sebaceous follicles of the face.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Med.) A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun a blackhead

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a black-tipped plug clogging a pore of the skin

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin comedō, glutton (from a comparison of the wormlike shape of the waxy material that can be squeezed from a blackhead to a worm believed to feed on the body), from comedere, to eat up : com-, intensive pref.; see com– + edere, to eat; see ed- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin comedō ("glutton").

Examples

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