Definition of endothermic in English:



  • 1Chemistry
    (of a reaction or process) accompanied by or requiring the absorption of heat.

    The opposite of exothermic
    • ‘It is fully reversible with the temperature and displays in heating direction as a small endothermic event.’
    • ‘A reaction which has a positive value for this is an endothermic reaction and requires heat.’
    • ‘Solar receivers absorb this concentrated solar radiation and deliver it, in the form of high-temperature heat, to a chemical reactor wherein an endothermic reaction results in the production of solar fuels.’
    • ‘This process is endothermic, pulling heat from its surroundings.’
    • ‘Evaporation is an endothermic process, so the heat inside the refrigerator is absorbed by the coil and the refrigerator is cooled.’
    1. 1.1(of a compound) requiring a net input of heat for its formation from its constituent elements.
      • ‘The highly flammable gas acetylene is an endothermic compound which can decompose extremely explosively when in its solid or liquid states or in its gaseous state under pressure.’
      • ‘This element forms extremely endothermic compounds, which are in many cases explosive.’
  • 2Zoology
    (of an animal) dependent on or capable of the internal generation of heat.

    • ‘For example, one might think that skeletal growth rates would be higher for an endothermic animal than for an ectothermic, or cold-blooded, one.’
    • ‘According to this scenario, also like mammals and birds, they must have been endothermic, or nearly so.’
    • ‘This bone structure similarity shows that dinosaurs were endothermic.’
    • ‘However this strategy is not feasible for endothermic herbivores with a rapid metabolic rate and having limited time available to extract energy and nutrients.’
    • ‘The larger an endothermic animal, the more heat it generates relative to the surface area of its body.’