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heat wave

or heatwave

[heet-weyv] /ˈhitˌweɪv/
noun
1.
an air mass of high temperature covering an extended area and moving relatively slowly.
2.
a period of abnormally hot and usually humid weather.
Origin of heat wave
1875-1880
First recorded in 1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for heat wave
Contemporary Examples
Historical Examples
  • Claire was horrified at the effect of this heat wave on Sophie Blake.

    The Independence of Claire Mrs. George de Horne Vaizey
  • A third kind of wave which goes forth in the ether from the spark gap of our coil is a heat wave.

  • Because, five weeks later, there was a heat wave in the Red Sea, and everybody took off all the clothes they had.

    Just So Stories Rudyard Kipling
  • May's glowing sun, shining through the scantily covered branches, made dancing motes of heat wave above the surface of red clay.

    A Tar-Heel Baron Mabell Shippie Clarke Pelton
  • Here we were in the middle of a heat wave, the thermometer nudging ninety, and the old guy's wrist is like an icicle!

    The Scapegoat Richard Maples
British Dictionary definitions for heat wave

heat wave

noun
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
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Word Value for heat

7
6
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