单词 | pro-ostracum |
释义 | pro-ostracum/(ˌ)prəʊˈɒstrək(ə)m/Palaeontology noun An anterior prolongation of the guard or rostrum of a belemnite or other fossil cephalopod, usually long and flat. OriginMid 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From pro- + ancient Greek ὄστρακον ostracon, with remodelling of the ending after Latin neuter nouns in -um. |
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