D defs.my
Entry 2 senses Webster, 1913

Pentamerous

· Pen·tam·er·ous · IPA
01 a. 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,…
  1. 1.
    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.(Biol.)
  2. 2.
    Belonging to the Pentamera.(Zool.)