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.
2. Zool.
Belonging to the Pentamera.
© Webster 1913.