petagram

See also: peta-gram

English

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