Nantoka/초속chosok초속 (chosok) is a Korean word meaning “speed per second”.Meanings1speed per secondPart of speechnounHanja秒速Related words초second고속버스express bus속도speed급속히rapidly고속high speed과속speeding초고속superhigh speed가속acceleration가속화accelerating급속rapidity급속도rapid speed신속quicknessStudy Korean with flashcards →