# microphotometer

> English word · Noun

## Definitions
1. Any of various photometers used either to measure the variation of densities over small areas, or to measure accurately small changes in illumination.

## Etymology
From micro- + photometer.

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