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Noun1.twice-pinnate - a pinnate leaf having two pairs of leafletstwice-pinnate - a pinnate leaf having two pairs of leaflets
pinnate leaf - a leaf resembling a feather; having the leaflets on each side of a common axis
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References in periodicals archive ?
Bipinnate Twice-pinnate or twice-divided; the main rachis being divided into two or more subdivisions that contain leaflets.