heat wave

or heat·wave

[ heet-weyv ]
See synonyms for heat wave on Thesaurus.com
nounMeteorology, Climatology.
  1. a period of abnormally hot and usually humid weather; heat event: I moved to the coast up north because summer back home has become one long, unbearable heat wave.

  2. an air mass of high temperature covering an extended area and moving relatively slowly: Another heat wave is expected to form across the South and into the Northeast by week’s end.

Origin of heat wave

First recorded in 1875–80

Words Nearby heat wave

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use heat wave in a sentence

British Dictionary definitions for heat wave

heat wave

  1. a continuous spell of abnormally hot weather

  2. (not in technical use) an extensive slow-moving air mass at a relatively high temperature

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012