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. (Zoöl.) Belonging to the Pentamera.