Definition of discolith in US English:

discolith

noun

Biology
  • Any coccolith with a more or less discoid shape, often with a thickened or elevated rim surrounding a central area which may be perforated.

Origin

Late 19th century; earliest use found in Quarterly Journal of Microscopical Science. From disco- + -lith, after scientific Latin Discolithus.

Pronunciation

discolith

/ˈdɪskə(ʊ)lɪθ/