1. the quality or state of being exothermic; the property of a chemical reaction that releases heat energy to the surroundings
Usage: technical term used in chemistry and thermodynamics; often used in academic and scientific contexts

Examples

• The exothermicity of the combustion reaction made it suitable for use as a fuel source.
• Scientists measured the exothermicity of the neutralization reaction by monitoring the temperature change.
• The exothermicity of the explosion was evident from the intense heat and light produced.
• Understanding the exothermicity of different reactions helps chemists predict reaction behavior.
• The exothermicity of the oxidation process releases enough energy to sustain the reaction.