(time) second

(Internet) flash sale; (sports or online gaming) rapid dispatch of an opponent

(neologism) (slang) to respond to a message within seconds

to ejaculate within a few seconds during sex

to understand instantly

nanosecond, ns, 10^-9 s (Tw); PRC equivalent: 納秒|纳秒[na4 miao3]

microsecond, µs, 10^-6 s

to count the number of seconds (between two events)

millisecond, ms

picosecond, ps, 10^-12 s