Nounspeed per second; velocity per second · instant; moment; a few seconds

Nouncountdown

Nounsecond hand (of clock)

Noun, Suru verbwinning in a flash; instant defeat

Nounarc second; arcsecond; second of arc

Expressions (phrases, clauses, etc.)in an instant; in a flash; right away; immediately

Nounnumber of seconds

Nounstop watch

Nounrapid progress; minute-by-minute progress