tetramerous

adjective te·tram·er·ous \te-ˈtra-mə-rəs\

Definition of TETRAMEROUS

: having or characterized by the presence of four parts or of parts arranged in sets of four <tetramerous flowers>

New Latin tetramerus, from Greek tetramerēs, from tetra- + meros part — more at merit

First Known Use: 1826

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