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


airmen's meteorological information

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of AIRMET was in 1950

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near AIRMET

Cite this Entry

“AIRMET.” Dictionary, Merriam-Webster, Accessed 26 Nov. 2022.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.