Source : Webster's Revised Unabridged Dictionary (1913)

Fissiparous \Fis*sip"a*rous\, a. [L. fissus (p. p. of findere to
   split) + parere to bring forth: cf. F. fissipare.] (Biol.)
   Reproducing by spontaneous fission. See {Fission}. --
   {Fis*sip"a*rous*ly}, adv.