The Collaborative International Dictionary
Fissiparously
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.
Wiktionary
fissiparously
adv. In a fissiparous manner.