Webster’s Revised Unabridged Dictionary · 1913
Deduplication
De·du′pli·ca′tion (dē·dū·plĭ·kā′shŭn), n. [Pref. de- + duplication.] (Biol.) The division of that which is morphologically one organ into two or more, as the division of an organ of a plant into a pair or cluster.