Definition of Trigonia
1. n. A genus of pearly bivalve shells, numerous extinct species of which are characteristic of the Mesozoic rocks. A few living species exist on the coast of Australia.
Medical Definition of Trigonia
1.
A genus of pearly bivalve shells, numerous extinct species of which are characteristic of the Mesozoic rocks. A few living species exist on the coast of Australia.
Origin: NL. See Trigon. So called in allusion to the triangular shape of some species.
Source: Websters Dictionary
(01 Mar 1998)
Lexicographical Neighbors of Trigonia
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