Releasing energy in the form of heat; describing chemical or physical reactions that give off warmth to the environment.
From Greek exō (outside) + thermikos (relating to heat). This is the more common modern scientific form of exothermal, standardized in chemistry and physics terminology.
Combustion, respiration, and neutralization reactions are exothermic—even your cells are constantly running exothermic reactions to power your thoughts, movements, and heartbeat!
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