discolith Meaning, Definition & Usage

Dis"co*lith noun
Etymology
Gr. a round plate + -lith.
Definitions
  1. (Biol.) One of a species of coccoliths, having an oval discoidal body, with a thick strongly refracting rim, and a thinner central portion. One of them measures about 1⁄50000 of an inch in its longest diameter.

Webster 1913