# TCAS

> English word · Noun · IPA /ˈtiːˌkæs/ · frequency rank #76,385

## Definitions
1. Initialism of traffic (alert and) collision avoidance system, a system for warning pilots of impending mid-air collisions and telling them what (if any) evasive action to take.

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