| NOUN | substance | exotherm | a compound that gives off heat during its formation and absorbs heat during its decomposition |
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| Meaning | A compound that gives off heat during its formation and absorbs heat during its decomposition. | |
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| Broader | compound, chemical compound | (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight |
| Adjectives | exothermic | (of a chemical ... / chemical reaction or compound) occurring or formed with the liberation of heat |
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