verb (used with object)
to heat to excess.
to excite or agitate; make vehement: a crowd overheated by rabble-rousers.
verb (used without object)
to become overheated: a stove that overheats alarmingly; a temper that overheats with little provocation.
the state or condition of being overheated; excessive heat, agitation, or vehemence.

1350–1400; Middle English overheten. See over-, heat

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To overheat
World English Dictionary
overheat (ˌəʊvəˈhiːt)
1.  to make or become excessively hot
2.  (tr; often passive) to make very agitated, irritated, etc
3.  (intr) (of an economy) to tend towards inflation, often as a result of excessive growth in demand
4.  (tr) to cause (an economy) to tend towards inflation
5.  the condition of being overheated

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
Word Origin & History

"to make too hot" (trans.), late 14c., from over + heat (v.). Intrans. sense "to become too hot" is from 1902, originally in reference to motor engines.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
They need a way to cool down their bodies, and especially their brains, before
  they overheat.
But remember that dogs can overheat easily, so it's even more important to
  provide them with cooling retreats.
If it freezes then it could jam the cooling system causing the core to overheat.
In wearing winter clothing, exertion causes the body to overheat.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature