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单词 ostracoderm
释义

WordReference Random House Unabridged Dictionary of American English © 2024
os•tra•co•derm  (ostrə kō dûrm′),USA pronunciation n. 
  1. Paleontologyany of several extinct jawless fishes of the Ordovician, Silurian, and Devonian periods, having the body enclosed in an armor of bony plates.
  • Greek ostrakódermos with a shell, equivalent. to óstrako(n) shell, tile + -dermos -derm
  • Neo-Latin Ostracodermi, plural ofOstracodermus
  • 1890–95

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