Si Second Unit Of Time (disambiguation)

Si Second Unit Of Time may refer to:

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  Second (SI base unit of time)

  The SI base unit of time, defined in terms of the caesium-133 hyperfine transition frequency.

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  SI prefix: centi- (c) meaning one hundredth

  An SI prefix that denotes a factor of 10⁻², sometimes discussed in relation to time quantities like centiseconds.