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.


Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To heat wave
World English Dictionary
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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
When their predictions turn from cold snap to heat wave, say, it can play havoc
  with the forward price of gas.
Climatologists say heat wave takes toll on air conditioners.
Summer's heat wave has many of us running for cover.
You've been caught in a rolling blackout that state regulators have ordered as
  a heat wave brings on millions of air conditioners.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature