[ kom-i-doh ]
/ ˈkɒm ɪˌdoʊ /

noun, plural com·e·dos, com·e·do·nes [kom-i-doh-neez] /ˌkɒm ɪˈdoʊ niz/. Medicine/Medical.

a thickened secretion plugging a duct of the skin, especially of a sebaceous gland; blackhead.

Nearby words

  1. comedial,
  2. comedian,
  3. comedic,
  4. comedienne,
  5. comedist,
  6. comedo nevus,
  7. comedocarcinoma,
  8. comedogenic,
  9. comedown,
  10. comedy

Origin of comedo

1865–70; < New Latin; Latin: glutton, equivalent to comed(ere) to consume, eat up (com- com- + edere to eat) + agent suffix Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for comedo


/ (ˈkɒmɪˌdəʊ) /

noun plural comedos or comedones (ˌkɒmɪˈdəʊniːz)

pathol the technical name for blackhead

Word Origin for comedo

C19: from New Latin, from Latin: glutton, from comedere to eat up, from com- (intensive) + edere to eat

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for comedo



"blackhead," etc., 1866, from Latin comedo "glutton," from comedere "to eat up" (see comestible). A name formerly given to worms that devour the body; transferred in medical use to secretions that resemble them.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for comedo


[ kŏmĭ-dō′ ]

n. pl. com•e•dos

A blackhead and the primary lesion of acne vulgaris.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.