/ Thesaurus / L Synonyms of law of thermodynamics Find synonyms for: Noun1. law of thermodynamics, law, law of natureusage: (physics) a law governing the relations between states of energy in a closed systemWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dispel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language