The Collaborative International Dictionary
Fissiparity
Fissiparity \Fis`si*par"i*ty\, n. (Biol.) Quality of being fissiparous; fissiparism.
Wiktionary
fissiparity
n. (context biology English) The quality of being fissiparous.
WordNet
fissiparity
n. reproduction of some multicellular organisms by division, as in the case of some starfish
the tendence to break into parts; "the fissipairty of religious sects"