Petagram

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An SI unit of mass equal to 10¹⁵ grams. Symbol: Pg
  2. 2
    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; Sometimes used in Carbon Dioxide numbers, it is equivalent to Metric Gigatons (Giga) 10⁹ x (Ton) 10³ x (kg) 10³ = 10¹⁵

Etymology

From peta- + gram.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.