noun, plural comedos, comedones [kom-i-doh-neez] . Medicine/Medical.
a thickened secretion plugging a duct of the skin, especially of a sebaceous gland; blackhead.

1865–70; < Neo-Latin; Latin: glutton, equivalent to comed(ere) to consume, eat up (com- com- + edere to eat) + agent suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
comedo (ˈkɒmɪˌdəʊ)
n , pl comedos, comedones
pathol the technical name for blackhead
[C19: from New Latin, from Latin: glutton, from comedere to eat up, from com- (intensive) + edere to eat]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

"blackhead," etc., 1866, from L. comedo "glutton" (from comedere "to eat up"); a name formerly given to worms that devour the body, transf. in medical use to secretions that resemble them.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

comedo com·e·do (kŏm'ĭ-dō')
n. pl. com·e·dos or com·e·do·nes (-dō'nēz)
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.
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