# petagram

> English word · Noun

## Definitions
1. An SI unit of mass equal to 10¹⁵ grams. Symbol: Pg
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

## Etymology
From peta- + gram.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/petagram