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pleurosigma

Pleurosigma is a 11 letter word which starts with the letter P and ends with the letter A for which we found 1 definitions.

Definition
(n.) 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.
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