# photogain

> English word · Noun

## Definitions
1. The gain (multiplication factor) of a photodetector or photomultiplier

## Etymology
From photo- + gain.

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