# sidechannel

> English word · Noun

## Definitions
1. An indirect source of information about what a system is doing, such as execution time, version number, etc.
2. A small branch from the main flow of a river, hydraulic system, or electronic circuit.

## Etymology
From side + channel.

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