Definition of pentamerous in English:



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

    • ‘Most basal Eudicots are dimerous or trimerous, with only occasionally pentamerous types (Sabiaceae, Ranunculaceae) which represent homoplasious trends.’
    • ‘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.’’
    • ‘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