单词 | dimetrodon |
释义 | dimetrodon/dʌɪˈmiːtrədɒn /noun A large fossil carnivorous mammal-like reptile of the Permian period, with long spines on its back supporting a sail-like crest.
OriginModern Latin, from di- 'twice' + Greek metron 'measure' + odous, odont- 'tooth' (taken in the sense 'two long teeth'). |
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