pen·​tam·​er·​ous pen-ˈta-mə-rəs How to pronounce pentamerous (audio)
: divided into or consisting of five parts
specifically : having each floral whorl consisting of five or a multiple of five members

Word History


New Latin pentamerus, from penta- (from Greek) + -merus -merous

First Known Use

1821, in the meaning defined above

Time Traveler
The first known use of pentamerous was in 1821

Dictionary Entries Near pentamerous

Cite this Entry

“Pentamerous.” Dictionary, Merriam-Webster, Accessed 22 Jul. 2024.

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