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.

A light flashing once per second. The second (symbol: s), is a unit of time. There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. This tradition dates back to the …

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 was …

Define second. second synonyms, second pronunciation, second translation, English dictionary definition of second. n. 1. a. A unit of time equal to one sixtieth of a minute. b. The time …

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27 meanings: 1. a. coming directly after the first in numbering or counting order, position, time, etc; being the ordinal.... Click for more definitions.

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

Discover everything about the word "SECOND" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.