English Dictionary

second

/ˈsɛk.(ə)nd/

noun

One-sixtieth of a minute; the SI unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest.

I will be there in a second.

意味（1）

One-sixtieth of a minute; the SI unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest.

意味（2）

A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.

意味（3）

(informal) A short, indeterminate amount of time.

I'll be there in a second.