核拡散 かくかくさん Meanings Noun nuclear proliferation Kanji 核 nucleus. Read as カク. 拡 expand. Read as カク. 散 scatter. Read as サン. Words containing 核拡散 核拡散防止条約 (かくかくさんぼうしじょうやく) Treaty on the Non-Proliferation of Nuclear Weapons Jinuma: Japanese Dictionary · Word lists