adiabatic

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adiabatic

[¦ad·ē·ə¦bad·ik]
(thermodynamics)
Referring to any change in which there is no gain or loss of heat.

adiabatic

Occurring without the gain or loss of heat.

adiabatic

adiabaticclick for a larger image
Examples of adiabatic heating and cooling when a piston moves up and down in a cylinder.
Thermally insulated or self-contained (i.e., without heat entering or leaving the body).