核分裂性物質 かくぶんれつせいぶっしつ Meanings Noun fissile material; fissionables Kanji 核 nucleus. Read as カク. 分 part. Read as ブン. 裂 rip. Read as レツ. 性 nature. Read as セイ. 物 thing. Read as ブツ. 質 quality. Read as シツ. Jinuma: Japanese Dictionary · Word lists