Search
The Online Encyclopedia and Dictionary
Encyclopedia
Dictionary
Quotes
Exothermic
Exothermic
has several meanings, including:
In
biology
, an
exothermic
or
poikilothermic
animal
is one that requires external sources of heat (usually
sunlight
) to maintain its internal temperature: for example,
reptiles
. See also
endothermic
.
In
chemistry
, an
exothermic
reaction
is one that produces
heat
: for example,
combustion
. See also
thermodynamics
,
chemical thermodynamics
.
Last updated: 10-29-2005 02:13:46