单词 | ammonite |
释义 | am·mo·nite (ămə-nīt′) n. 1. An extinct cephalopod mollusk of the order Ammonitida of the Permian to Cretaceous Periods, having a thick, usually coiled shell characterized by intricate suture patterns where the septa between individual chambers join the outer shell wall. 2. An ammonoid. [New Latin Ammōnītēs, from Latin (cornū) Ammōnis, (horn) of Amun, ammonite, genitive of Ammōn, Amun, from Greek : from Egyptian jmn.] am′mo·nitic (-nĭtĭk) adj. ammonite |
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