Definitions for peta-

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  1. peta-(Prefix)

    In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10. Symbol: P

  2. Origin: Based on penta- with the middle letter removed, but the previously coined prefix tera- came from Greek teratos, which means monster.

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  1. Peta-

    Peta is a unit prefix in the metric system denoting multiplication by 1015. It was adopted in the International System of Units in 1975, and has the symbol P. Peta is derived from the Greek πέντε, meaning "five". It denotes the fifth power of 1000. It is similar to the prefix penta, but without the letter n. Examples: ⁕1 petametre = 1015 metres ⁕1 petasecond = 1015 seconds ⁕1 petabyte = 1015 bytes ⁕the mass–energy equivalence is 89.9 PJ/kg ⁕1 light-year = 9.461 Pm

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