The Collaborative International Dictionary
Tetramerous
Tetramerous \Te*tram"er*ous\, a. [Tetra- + Gr. ? part.]
(Bot.) Having the parts arranged in sets of four; as, a tetramerous flower.
(Zo["o]l.) Having four joints in each of the tarsi; -- said of certain insects.
Wiktionary
tetramerous
a. (context botany English) in four parts: in a flower each whorl (of flower parts) has four flower parts.
WordNet
tetramerous
adj. having or consisting of four similar parts; tetramerous flowers