AIRMET

noun

ˈer-ˌmet 

variants or less commonly airmet

plural AIRMETs also airmets

: a notice of potentially hazardous weather conditions (such as turbulence, icing, or low visibility) along a planned flight route that is provided to the pilot of an aircraft before takeoff compare sigmet

Word History

Etymology

airmen's meteorological information

First Known Use

1950, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now