Wordnet 3.0
ADJECTIVE (1)
1.
having or consisting of four similar parts;
tetramerous flowers;
The Collaborative International Dictionary of English v.0.48:
Tetramerous \Te*tram"er*ous\, a. [Tetra- + Gr. ? part.]
1. (Bot.) Having the parts arranged in sets of four; as, a
tetramerous flower.
[1913 Webster]
2. (Zool.) Having four joints in each of the tarsi; -- said
of certain insects.
[1913 Webster]
WordNet (r) 3.0 (2006):
tetramerous
adj 1: having or consisting of four similar parts; tetramerous
flowers