/ Thesaurus / Z Synonyms of zeroth law of thermodynamics Find synonyms for: Noun1. zeroth law of thermodynamics, law of thermodynamicsusage: the law that if two bodies are in thermal equilibrium with a third body then the first two bodies are in thermal equilibrium with each otherWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language