Also found in: Thesaurus, Medical, Encyclopedia.
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·nit′ic (-nĭt′ĭk) adj.
1. A member of a Semitic people inhabiting ancient Ammon, mentioned frequently in the Bible.
2. The Semitic language of the Ammonites.
Switch to new thesaurus
|Adj.||1.||ammonitic - of or related to an order of fossil cephalopods|