# microroentgen

> English word · Noun

## Definitions
1. A unit of exposure to ionizing radiation, one millionth of a roentgen.

## Etymology
From micro- + roentgen.

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