DICT.TW Dictionary Taiwan
204.236.220.47

Search for:
[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Pleu·ro·sig·ma n.  Bot. A genus of diatoms of elongated elliptical shape, but having the sides slightly curved in the form of a letter S.  Pleurosigma angulatum has very fine striations, and is a favorite object for testing the high powers of microscopes.