Word Study
apetalous
CIDE DICTIONARY
apetalous, a. [Pref. a- not + petal.].
Having no petals, or flower leaves. [See Illust. under Anther]. [1913 Webster]
OXFORD DICTIONARY
apetalous, adj. Bot. (of flowers) having no petals.
Etymology
mod.L apetalus f. Gk apetalos leafless f. a- not + petalon leaf
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