セックFreq.FrequencyTop 100,000Meanings1nounsecondabbreviationAbbreviation of セカンド, used in informal or technical contexts such as sports commentary, music, or stopwatch readings.See also: セカンドあと3セックでタイムアップだ。Three seconds left on the clock.彼かれは100メートルを11セックで走はしった。He ran 100 meters in 11 seconds.