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What does exothermic mean?

Looking for the meaning or definition of the word exothermic? Here's what it means.

Adjective
  1. (chemistry) That releases energy in the form of heat.
  2. (chemistry) That releases heat during its formation, and absorbs it during its decomposition
  3. (zoology) Of an animal whose body temperature is regulated by external factors; cold-blooded
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Examples
Filler metal is obtained from an exothermic reaction between iron oxide and aluminum.
Inside the mold, the liquid undergoes an exothermic chemical reaction, which forms the polyurethane polymer in the mold.
The rusting of iron is an exothermic reaction and this process is used in hand warmers which are utilized in cold regions.
For these exothermic processes, the solubility decreases with an increase in temperature.
Little heat is needed in the roasting of sulfide ores because the oxidation of the sulfide ion to sulfur dioxide is exothermic.
Because the emission of radiation involves a loss of energy, chemiluminescent reactions must be exothermic.

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