放射性崩壊 ほうしゃせいほうかい Meanings Noun radioactive decay Kanji 放 release. Read as ホウ. 射 shoot. Read as シャ. 性 nature. Read as セイ. 崩 collapse. Read as ホウ. 壊 destroy. Read as カイ. Words containing 放射性崩壊 放射性崩壊系列 (ほうしゃせいほうかいけいれつ) radioactive decay series Jinuma: Japanese Dictionary · Word lists