原げん子し核かく崩ほう壊かいMeaningsNoun1. nuclear decay (Rare)Kanji used原original子child核nucleus崩crumble壊breakPitch accentげんしかくほうかいComposed of原げん子し核かくnucleus; atomic nucleusNoun崩ほう壊かいcollapse; crumbling; breaking down; caving in; (radioactive) decay; disintegrationNoun