# triac

> English word · Noun

## Definitions
1. A three-terminal electronic component that conducts current in either direction when triggered; a bidirectional triode thyristor.

## Etymology
Short for triode for alternating current.

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