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coccolith
coc·co·lith C0441500 (kŏk′ə-lĭth′)n. Any of several minute calcite plates that make up the external covering of certain haptophyte phytoplankton and in a fossilized state form chalk and limestone deposits.
[cocc(us) (from its shape) + -lith.]coccolith (ˈkɒkəlɪθ) n (Geological Science) any of the round calcareous plates in chalk formations: formed the outer layer of unicellular plankton[C19: New Latin, from Greek kokkos berry + lithos stone]coc•co•lith (ˈkɒk əˌlɪθ)
n. a microscopic calcareous disk or ring making up part of the covering of certain marine plankton and forming much of the content of chalk rocks. [1865–70; < New Latin Coccolithus orig. a genus name; see coccus, -o-, -lith] coc`co•lith′ic, adj. coccolith
coccolith[′käk·ə‚lith] (botany) One of the small, interlocking calcite plates covering members of the Coccolithophorida. |