Discolith

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Discolith \Dis"co*lith\, n. [Gr. ? a round plate + -lith.]
     (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.


     [1913 Webster]