The second (symbol: s) is a unit of time derived from the division of the day first into 24 hours, then to 60 minutes, and lastly to 60 seconds each, for a total of 24 × 60 × 60 = 86,400 …

The meaning of SECOND is next to the first in place or time. How to use second in a sentence.

SECOND definition: 1. immediately after the first and before any others: 2. the position in which a person finishes a…. Learn more.

1. In the second order, place, or rank: finished second. 2. But for one other; save one: the second highest peak.

Second definition: next after the first; being the ordinal number for two.. See examples of SECOND used in a sentence.

A second is a unit of time, and one of the sixty parts that a minute is divided into.

Oct 15, 2025 · second, fundamental unit of time, now defined in terms of the radiation frequency at which atoms of the element cesium change from one state to another.

The second is the international standard unit (SI unit) for science. Celestial sphere -based: as in sidereal time, where the apparent movement of the stars and constellations across the sky is …

1. In the second order, place, or rank: finished second. 2. But for one other; save one: the second highest peak.

You're second on the list. This is my second piece of chocolate cake. She didn't win but she did come second (= was the one after the winner) in one race.