'Pentamerous' definitions:

Definition of 'pentamerous'

From: WordNet
adjective
Divided into five parts; specifically, having each floral whorl consist of five (or a multiple of five) members; "pentamerous flowers"

Definition of 'Pentamerous'

From: GCIDE
  • Pentamerous \Pen*tam"er*ous\, a. [Penta- + Gr. ? part.]
  • 1. (Biol.) Divided into, or consisting of, five parts; also, arranged in sets, with five parts in each set, as a flower with five sepals, five petals, five, or twice five, stamens, and five pistils. [1913 Webster]
  • 2. (Zool.) Belonging to the Pentamera. [1913 Webster]