Meaning of comedo

com•e•do

Pronunciation: (kom'i-dō"), [key]
— pl. com•e•dos, com•e•do•nes
  1. a thickened secretion plugging a duct of the skin, esp. of a sebaceous gland; blackhead.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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