petagram

Meaning

Noun

A unit of mass equal to 1,000,000,000,000,000 (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

Origin

peta- + gram

Modern English dictionary

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