| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024ac•ri•tarch (ak′ri tärk′),USA pronunciation n. [Paleontol.]- Paleontologyany of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition.
- Greek ákrit(os) confused, doubtful (see a-6, critic) + arché̄ beginning, origin (compare archi-)
- Neo-Latin Acritarcha (neuter plural), irregularly
- 1963
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