# milliwatt-hour

> English word · Noun

## Definitions
1. A unit of energy equal to the power of one milliwatt being in use for one hour. It is equal to 3.6 joules.

## Etymology
By surface analysis, milliwatt + hour, or, by surface analysis, milli- + watt-hour.

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