a. [f. L. type *fissīvus, f. findĕre (pa. pple. fissus) to split.] Pertaining to, or of the nature of, fission.
1875. Huxley & Martin, Elem. Biol., v. 29. The whole plant is built up by the fissive multiplication of the simple cell in which it takes its origin, and by the subsequent growth and metamorphosis of the cells they produced.
