Definition of polypetalous in US English:

polypetalous

adjective

  • Botany. Originally: †having many petals (obsolete). Later: having petals that are separate, not united (opposed to gamopetalous, monopetalous, and sympetalous).

Origin

Late 17th century; earliest use found in Philosophical Transactions of the Royal Society of London. From poly- + -petalous. Compare scientific Latin polypetalus.

Pronunciation

polypetalous

/ˌpɒlɪˈpɛt(ə)ləs/