# picogram

> English word · Noun

## Definitions
1. An SI unit of mass equal to 10⁻¹² grams. Symbol: pg

## Etymology
From pico- + gram.

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