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  1. en.wikipedia.org › wiki › SecondSecond - Wikipedia

    The second (symbol: s) is a unit of time, historically defined as 1⁄86400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of Units (SI) is more precise:

  2. Use our handy calculator to convert between seconds and other units of time. Just type the number to convert into the box and hit the calculate button.

  3. Use this easy and mobile-friendly calculator to convert between seconds and minutes. Just type the number of seconds into the box and hit the Calculate button.

  4. 1. a. : next to the first in place or time. was second in line. b (1) : next to the first in value, excellence, or degree. his second choice of schools. (2) : inferior, subordinate. was second to none. c. : ranking next below the top of a grade or degree in authority or precedence. second mate. d. : alternate, other.

  5. SECONDS definition: 1. an extra amount of food that is given after the first amount has been eaten: 2. an extra amount…. Learn more.

  6. Seconds, time. The second (symbol: s; abbreviation: sec.) is the name of a unit of time, and is the International System of Units (SI) base unit of time.

  7. A second is a unit of time. The symbol for second is sec.

  8. n. 1. a. A unit of time equal to one sixtieth of a minute. b. The time needed for a cesium-133 atom to perform 9,192,631,770 complete oscillations. See Table at measurement. 2. A brief interval of time; a moment. See Synonyms at moment. 3. Mathematics A unit of angular measure equal to one sixtieth of a minute.

  9. Jul 26, 2024 · A second is the base unit of time in the International System of Units (SI) and is symbolized as “s”. It is defined by the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom.

  10. SECONDS meaning: 1. an extra amount of food that is given after the first amount has been eaten: 2. an extra amount…. Learn more.

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