Definition of pro-ostracum in English:

pro-ostracum

noun (ˌ)prəʊˈɒstrək(ə)m

An anterior prolongation of the guard or rostrum of a belemnite or other fossil cephalopod, usually long and flat.

Origin

Mid 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.

Definition of pro-ostracum in US English:

pro-ostracum

noun(ˌ)prəʊˈɒstrək(ə)m

An anterior prolongation of the guard or rostrum of a belemnite or other fossil cephalopod, usually long and flat.

Origin

Mid 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.

词汇	pro-ostracum
释义	Definition of pro-ostracum in English: pro-ostracum noun (ˌ)prəʊˈɒstrək(ə)m An anterior prolongation of the guard or rostrum of a belemnite or other fossil cephalopod, usually long and flat. Origin Mid 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. Definition of pro-ostracum in US English: pro-ostracum noun(ˌ)prəʊˈɒstrək(ə)m An anterior prolongation of the guard or rostrum of a belemnite or other fossil cephalopod, usually long and flat. Origin Mid 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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