heat wave

or heat·wave



an air mass of high temperature covering an extended area and moving relatively slowly.
a period of abnormally hot and usually humid weather.

Nearby words

  1. heat shield,
  2. heat sink,
  3. heat stroke,
  4. heat up,
  5. heat urticaria,
  6. heat-island,
  7. heat-labile,
  8. heat-moon,
  9. heat-seal,
  10. heat-seeking

Origin of heat wave

First recorded in 1875–80

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for heat wave

British Dictionary definitions for heat wave

heat wave


a continuous spell of abnormally hot weather
(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