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The Collaborative International Dictionary
Bipennated

Bipennate \Bi*pen"nate\, Bipennated \Bi*pen"na*ted\, a. [Pref. bi- + pennate: cf. L. bipennis. Cf. Bipinnate.] Having two wings. ``Bipennated insects.''
--Derham. [1913 Webster] ||

Wiktionary
bipennated

a. Having two wings. alt. Having two wings.