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  1. SECOND Definition & Meaning - Merriam-Webster

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

  2. 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 …

  3. 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.

  4. Second - definition of second by The Free Dictionary

    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 needed for a …

  5. What Is a Second? - Computer Hope

    Feb 22, 2026 · A second can refer to any of the following: 1. With time, a second (often abbreviated sec) is a brief moment whose length equals one sixtieth (1/60) of a minute. Many computers track time in …

  6. second Definition & Meaning - Dictionary.net

    The comprehensive definition of second. Includes pronunciation, synonyms, etymology, and usage examples to help you master this word.

  7. Second Definition (Illustrated Mathematics Dictionary)

    Illustrated definition of Second: The basic unit of time. There are 60 seconds in 1 minute and 3,600 seconds in an hour. In this clock the hand...

  8. second - Oxford Learner's Dictionaries

    Definition of second1 noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  9. Second – Definition, Tools, Conversion Chart, Uses - Examples

    Maths Second – Definition, Tools, Conversion Chart, Uses Second – Definition, Tools, Conversion Chart, Uses A second is the base unit of time in the International System of Units (SI) and is …

  10. Second Definition & Meaning - YourDictionary

    Second definition: A brief interval of time; a moment. Origin of Second Middle English seconde from Old French from Medieval Latin (pars minūta) secunda second (small part) feminine of Latin secundus …