noun
Treaty on the Non-Proliferation of Nuclear Weapons; Nuclear Non-Proliferation Treaty
Official name of the international treaty aimed at preventing the spread of nuclear weapons.
日本は核拡散防止条約を批准している。
Japan has ratified the Treaty on the Non-Proliferation of Nuclear Weapons.
Abbreviation commonly used in English and sometimes in Japanese contexts; 核拡散防止条約 is the full Japanese name.
Compound of 核 (kaku, 'nuclear'), 拡散 (kakusan, 'proliferation'), 防止 (bōshi, 'prevention'), and 条約 (jōyaku, 'treaty').