# photon circle

> English word · Noun

## Definitions
1. Synonym of photon sphere.

## Etymology
From the path of photon becoming circular, instead of the usual hyperbolic orbits.

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