/ Dictionary / Index C Clausius: Meaning and Definition of Find definitions for: Clau•si•us Pronunciation: (klou'zē-us), [key] — n. 1822–88, German mathematical physicist: pioneer in the field of thermodynamics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Clausewitz Clausius cycle Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language