• Webster's Revised Unabridged Dictionary
    • n Biforine (Bot) An oval sac or cell, found in the leaves of certain plants of the order AraceƦ. It has an opening at each end through which raphides, generated inside, are discharged.
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Century Dictionary and Cyclopedia
    • n biforine In botany, a minute oval sac found in the interior of the green pulpy part of the leaves of some araceous plants, with an aperture at each end through which raphides are expelled.
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Webster's Revised Unabridged Dictionary
L. biforis, biforus, having two doors; bis, twice + foris, door