# autocorrelation

> English word · Noun · frequency rank #80,212

## Definitions
1. The cross-correlation of a signal with itself: the correlation between values of a signal in successive time periods.

## Etymology
From auto- + correlation.

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