FISSIPAROUS Meaning of FISSIPAROUS in English adj.1 Biol. reproducing by fission. 2 tending to split. Derivatives: fissiparity n. fissiparously adv. fissiparousness n. Etymology: L fissus past part. (as FISSURE) after viviparous Oxford English vocab. Оксфордский английский словарь. 2012