zeroth law of thermodynamics
Also found in: Dictionary, Thesaurus, Wikipedia.
Related to zeroth law of thermodynamics: first law of thermodynamics
zeroth law of thermodynamics[¦zir‚ōth ‚lȯ əv ‚thər·mō·dī′nam·iks]
A law that if two systems are separately found to be in thermal equilibrium with a third system, the first two systems are in thermal equilibrium with each other, that is, all three systems are at the same temperature.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.