英语词汇placoid怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	placoid
释义	placoid /ˈplækɔɪd/ adjective Zoology (of fish scales) tooth-like, being made of dentine with a pointed backward projection of enamel, as in sharks and rays 【动】（鱼鳞）板状的。比较CTENOID和GANOID. 词源 mid 19th cent.: from Greek plax， plak- 'flat plate' + -OID.
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