# redshift

> English word · Noun · IPA /ˈɹɛdˌʃɪft/ · frequency rank #55,684

## Definitions
1. An increase in the wavelength of a photon or of light, corresponding to a lower frequency and a shift toward the red end of the electromagnetic spectrum.

## Etymology
From red + shift.

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