/ Dictionary / Index C Catherine I: Meaning and Definition of Find definitions for: Catherine I Pronunciation: [key] — (Marfa Skavronskaya) 1684?–1727, Lithuanian wife of Peter the Great: empress of Russia 1725–27. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Catherine Catherine II Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language