noun
a substance or organism that undergoes endothermic reactions
adjective
describing a process or reaction that absorbs heat from its surroundings
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The chemical reaction is classified as endothermic because it absorbs heat from the surroundings.
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This reaction is endothermic, which means it sucks up heat.
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Dude, this reaction is like a heat vampire, totally endothermic.
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Her personality can be described as endothermic, always needing external warmth and validation.