[oh-ver-heet] /ˌoʊ vərˈhit/
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
Example Sentences for overheat
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.
On a hot day, our bodies begin to overheat, and our skin brightens as blood flows up near the surface.
The particles can clog ventilation holes, causing the jet engines to overheat.
However, in some cases it can provide too much insulation and make the animal overheat.
Laptops equipped with lithium-ion batteries occasionally overheat and catch fire.
The high-velocity impact could have caused other lithium-ion batteries to overheat and catch fire.
The material also reflects less infrared light, which can overheat a solar panel and reduce its performance.
British Dictionary definitions for overheat
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
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Word Origin and History for overheat
"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
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