heat capacity

American  

noun

Thermodynamics.

1. the heat required to raise the temperature of a substance one degree.

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heat capacity British  

noun

1. the heat required to raise the temperature of a substance by unit temperature interval under specified conditions, usually measured in joules per kelvin. Symbol: C p (for constant pressure) or C v (for constant volume)

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heat capacity Scientific  

1. The ratio of the heat energy absorbed by a substance to its increase in temperature. Heat capacity is also called thermal capacity.

2. ◆ The specific heat or specific heat capacity of a substance is the heat capacity per unit mass, usually measured in joules per kilogram per degree Kelvin.

3. See also latent heat thermodynamics

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heat capacity Cultural  

1. In physics, the capability of a substance to absorb energy in the form of heat for a given increase in temperature. Materials with high heat capacities, such as water, require greater amounts of heat to increase their temperatures than do substances with low heat capacities, such as metals. (See entropy.)

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Etymology

Origin of heat capacity

First recorded in 1900–05

Compare meaning

How does heat-capacity compare to similar and commonly confused words? Explore the most common comparisons:

• heat capacity vs. specific heat

Example Sentences

Other properties, including compressibility and heat capacity, also behave in increasingly unusual ways as the temperature decreases.

From Science Daily • Mar. 29, 2026

The females nest underground, which buffers them from variations in air temperature, although soil texture may affect the degree of thermal buffering as sandy soils have a lower heat capacity.

From Science Daily • May 7, 2024

They also argued that another key piece of data presented as evidence of superconductivity, the heat capacity of the sample, was a “flawed measurement.”

From Science Magazine • Sep. 27, 2023

Specific heat and heat capacity are measures of the energy needed to change the temperature of a substance or object.

From Textbooks • Feb. 14, 2019

Compute also the heat capacity of the thermometer; or, if it be long, of so much of it as is found to share nearly the temperature of the immersed portion.

From Scientific American Supplement, No. 358, November 11, 1882 by Various