# millihartree

> English word · Noun

## Definitions
1. The atomic unit of energy, 1/1000 of a hartree.

## Etymology
From milli- + hartree.

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