# millimilligram

> English word · Noun

## Definitions
1. 0.000001 grams, as a unit of mass.

## Etymology
From millimilli- + gram / milli- + milligram.

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