n. pl. com·e·dos or com·e·do·nes (-dōnēz) The primary lesion of acne vulgaris, consisting of a hair follicle that is occluded with sebum and keratin; a blackhead or whitehead. [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 the Appendix of Indo-European roots.] |
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