pen·tam·er·ous /pɛnˈtæmərəs/
(a.)由五個部分組成的
Pen·tam·er·ous a.
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.
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pentamerous
adj : divided into five parts; specifically, having each floral
whorl consist of five (or a multiple of five) members;
"pentamerous flowers"