noun, noun or participle which takes 'suru', intransitive verb
end of service; termination of service
Internet slang abbreviation of サービス終了, especially for online games or servers shutting down. Used as a noun or with する.
See also: サービス終了
あのゲーム、来月サ終するらしいよ。
I heard that game is ending its service next month.
The termination of service was announced, and all the players are sad.