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The Collaborative International Dictionary
Polypetalous

Polypetalous \Pol`y*pet"al*ous\, a. [Poly- + petal.] (Bot.) Consisting of, or having, several or many separate petals; as, a polypetalous corolla, flower, or plant.
--Martyn.

Wiktionary
polypetalous

a. (context botany English) having a corolla composed of distinct, separable petals

WordNet
polypetalous

adj. having a corolla composed of many separated or distinct petals