Definition of pentamerous in English:

pentamerous

Syllabification: pen·tam·er·ous
Pronunciation: /penˈtamərəs
 
/

adjective

Botany & Zoology
1Having parts arranged in groups of five.
More example sentences
  • These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi.
  • The zygomorphic, pentamerous and spurred flowers are approximately 15 x 12 mm in diameter.
  • Most basal Eudicots are dimerous or trimerous, with only occasionally pentamerous types (Sabiaceae, Ranunculaceae) which represent homoplasious trends.
1.1Consisting of five joints or parts. Compare with pentameral.

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal