英语词汇“placoderm”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	placoderm
释义	pla·co·derm (plăkə-dûrm′) n. Any of various extinct jawed fishes of the group Placodermi of the Silurian and Devonian Periods, having bony plates of armor covering the head and thorax. Placoderms were among the first jawed vertebrates. [New Latin Placodermī, class name : Greek plax, plak-, flat stone, plate; see plāk-¹ in the Appendix of Indo-European roots + -DERM.]
随便看	renunciatory Renwick René René René René François Armand René Jules René Jules reoccur reopen reorder reorganization reorganizational reorganize reorganizer reovirus rep rep rep rep rep rep Rep. repackage anyway

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