a hypothetical body of infinitely large mass capable of absorbing or rejecting unlimited quantities of heat without undergoing appreciable changes in temperature, pressure, or density.
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Words nearby heat reservoir
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for heat reservoir
He had to pump that heat into a heat-reservoir—a water tank probably—to protect himself.The Ultimate Weapon|John Wood Campbell