hard plug composed of sebum and dead skin cells. The mildest type of acne.
When the sebum plug of a comedo is exposed to air, it oxidizes and becomes a blackhead.
According to the NIH, it is called a comedo.
comedo
Comedones
A blackhead, or open comedo is a wide opening on the skin with a blackened mass of skin debris covering the opening. Despite their name, some blackheads can be yellowish in color. A comedo is a widened hair follicle which is filled with skin debris (keratin squamae), bacteria and oil (sebum). A closed comedo is a whitehead, while an open comedo is a blackhead. the plural of "comedo" is comedomes".
the plural word is comedones
Comedo
Depends on the lesion. Could be comedonal, papular, pustular or nodular.
When the sebum plug of a comedo is exposed to air, it oxidizes and becomes a blackhead.
The official definition of the word blackhead is "a plug of sebum in a hair follicle, darkened by oxidation."
I can name a few skin conditions that are un-inflamed, but it's best for me to give the most basic of all, and that is a Comedo or Comedones. Basically, it is a clogged hair follicle in the skin. It can either be a black head (open pores clogged with bacteria) or Whiteheads (closed by the skin).
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern C-M-D-. That is, six letter words with 1st letter C and 3rd letter M and 5th letter D. In alphabetical order, they are: comade comedo comedy comodo