n.1.(Bot.) An oval sac or cell, found in the leaves of certain plants of the order Araceæ. It has an opening at each end through which raphides, generated inside, are discharged.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Named the biforine (B) by Turpin (1836), this cell easily discharges a stream of crystals from the cell tips when pressure is applied to the sides (Middendorf, 1983).
Observations sur les Biforines, organelles nouveaux situes entre les vescicles du tissu cellulaires des feuilles dans un certain nombre d'especes vegetales appartenant a Ia familie es Aroidees.