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- Second - Wikipedia
The second (symbol: s) is a unit of time derived from the division of the day, first into hours, then into minutes, and lastly into seconds, for a total of 24 × 60 × 60 = 86 400 seconds per day That definition, based on 1⁄86400 of a rotation of the Earth, is still used by the Universal Time 1 (UT1) system
- SECOND Definition Meaning - Merriam-Webster
The meaning of SECOND is next to the first in place or time How to use second in a sentence
- SECOND | English meaning - Cambridge Dictionary
SECOND definition: 1 immediately after the first and before any others: 2 the position in which a person finishes a… Learn more
- second - Oxford Learners Dictionaries
to wait for a short time
- Second - definition of second by The Free Dictionary
1 In the second order, place, or rank: finished second 2 But for one other; save one: the second highest peak
- Second - Math. net
The term "second" has a number of different meanings in the context of math and numbers Possibly the most important is that it is the base unit of time in the International System of Units (SI)
- Second: Introduction | NIST
Atomic clocks enable us to define the second — the international unit of time — in a precise, measurable way that doesn’t change over time And they allow us to divide the second into extremely small parts, opening up new applications with each finer subdivision
- What does Second mean? - Definitions. net
The second is the base unit of time in the International System of Units and is also a unit of time in other systems of measurement it is the second division of the hour by sixty, the first division by 60 being the minute
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