- A genus of diatoms of elongated elliptical form, but getting the sides slightly curved by means of a letter S. Pleurosigma angulatum has actually really good striations, and is a well liked object for testing the high powers of microscopes.
- A genus of Diatomaceæ, containing species in which the valves show, with a decent microscope, a number of outlines, able, under large powers and a favorable light, of quality into dots, and so furnishing exceptional tests for the power of a microscope.
Sentence for "pleurosigma"
- The figure I here show you…
- View More