noun, noun or participle which takes 'suru', transitive verb, intransitive verb
dissolution of a political party
Refers to the formal disbanding of a political party. Used both as a noun and as a suru-verb (transitive or intransitive).
与党が解党を決めた。
The ruling party decided to dissolve.
党首は解党を宣言した。
The party leader declared the dissolution of the party.
解散 is a broader term for dissolution (e.g., of parliament, a group, or a meeting), while 解党 specifically refers to the dissolution of a political party.
Compound of 解 (kai, 'disband, dissolve') and 党 (tō, 'party').