This word is acceptable for play in the UK dictionary that is being used in the following games:

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n. The act of warming or heating.

n. The state or condition of being heated.

n. The act of warming or heating; the production of heat in a body by the action of fire, or by communication of heat from other bodies.

n. The state of being heated.

n. The act or operation of warming or heating; the production of heat in a body by the action of fire, or by the communication of heat from other bodies.

n. The state of being heated.

n. the property of being warming

"Charleton appeals to the explanation of such phenomena as rarefaction and condensation, the differences in "degrees of Gravity" of bodies, and the numerous ways in which bodies can interpenetrate at the micro-level in terms of solubility, absorption, calefaction, and diverse chemical reactions."

heat    hotness    high temperature