petagram

See also: peta-gram

English

Alternative forms

Etymology

From peta- +‎ gram.

Noun

petagram (plural petagrams)

  1. (metrology) An SI unit of mass equal to 1015 grams. Symbol: Pg
    Sometimes used in Carbon Dioxide numbers, it is equivalent to Metric Gigatons (Giga) 109 x (Ton) 103 x (kg) 103 = 1015
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