noun
Boxing term for a stoppage by the referee when a fighter cannot safely continue, even without a full knockout.
試合はテクニカルノックアウトで終わった。
The match ended by technical knockout.
Variant with interpunct; less common in running text.
A full knockout (KO) where the fighter is knocked unconscious or unable to rise; TKO is a referee stoppage without a full KO.
Borrowed from English 'technical knockout'.