com·ma /ˈkɑmə/
 逗號,逗點


 comma
 逗點


 comma
 逗號


 Com·ma n.
 1. A character or point [,] marking the smallest divisions of a sentence, written or printed.
 2. Mus. A small interval (the difference between a major and minor half step), seldom used except by tuners.
 Comma bacillus Physiol., a variety of bacillus shaped like a comma, found in the intestines of patients suffering from cholera. It is considered by some as having a special relation to the disease; -- called also cholera bacillus.
 Comma butterfly Zool., an American butterfly (Grapta comma), having a white comma-shaped marking on the under side of the wings.

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 comma
      n 1: a punctuation mark (,) used to indicate the separation of
           elements within the grammatical structure of a sentence
      2: anglewing butterfly with a comma-shaped mark on the
         underside of each hind wing [syn: comma butterfly, {Polygonia
         comma]