# photology

> English word · Noun

## Definitions
1. A branch of physics that deals with light or the study of light and its effects.
2. That science concerned with the production of light and energy, especially regarding therapeutic applications.

## Etymology
From photo- + -logy.

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