Definition of pentamerous in English:

pentamerous

adjective

Zoology Botany
  • 1Having parts arranged in groups of five.

    • ‘The large number of strictly pentamerous families of starfish support the interpretation that there is ‘rigid control’ of pentamerism.’
    • ‘He expressed the possibility that the pentamerous condition of the water vascular system might be ‘rigidly programmed into the developmental process.’’
    • ‘Most basal Eudicots are dimerous or trimerous, with only occasionally pentamerous types (Sabiaceae, Ranunculaceae) which represent homoplasious trends.’
    • ‘The zygomorphic, pentamerous and spurred flowers are approximately 15 x 12 mm in diameter.’
    • ‘These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi.’
    1. 1.1 Consisting of five joints or parts.
      Compare with pentameral

Pronunciation:

pentamerous

/penˈtamərəs/