# photographometer

> English word · Noun

## Definitions
1. An instrument for determining the sensibility of the plates employed in photographic processes to luminous rays.

## Etymology
From photograph + -o- + -meter.

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