核かく分ぶん裂れつ性せい物ぶっ質しつMeaningsNoun1. fissile material; fissionablesKanji used核nucleus分part裂split性nature (of a person)物thing質qualityComposed of核かく分ぶん裂れつnuclear fission; karyokinesis (division of a cell nucleus during mitosis or meiosis)Noun性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun物ぶっ質しつmaterial; substance; matterNoun