We don't have synonyms for biforine yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are bicorne, ivorine and biforate.
(n) :
(botany) An oval sac or cell, found in the idioblasts of the leaves of certain araceous plants, with an opening at each end through which raphides, generated inside, are emitted.
(n) :
(botany) An oval sac or cell, found in the idioblasts of the leaves of certain araceous plants, with an opening at each end through which raphides, generated inside, are emitted.