卵らん祖そ細さい胞ぼうMeaningsNoun1. oogoniumKanji used卵egg祖grandparent細thin胞cellComposed of卵らんovum; ovule; egg cellNoun祖そancestor; forefather; progenitor; originator; pioneer; inventor; founder; grandfatherNoun細さい胞ぼうcell; cell (in an organization, esp. a communist party)Noun