Comedo

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Comedo \Com"e*do\, n.; pl. {Comedones}. [L., a glutton. See
     {Comestible}.] (Med.)
     A small nodule or cystic tumor, common on the nose, etc.,
     which on pressure allows the escape of a yellow wormlike mass
     of retained oily secretion, with a black head (dirt).
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  comedo
       n : a black-tipped plug clogging a pore of the skin [syn: {blackhead}]
       [also: {comedones} (pl)]