Com"ma (?), n. [L. comma
part of a sentence, comma, Gr. ? clause, fr. ? to cut off.
Cf. Capon.] 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 (Zoöl.), an American
butterfly (Grapta comma), having a white comma-shaped
marking on the under side of the wings.