/ Dictionary / Index S St. Thomas: Meaning and Definition of Find definitions for: St. Thomas Pronunciation: [key] an island in the Virgin Islands of the U.S., in the E West Indies. 47,260; 32 sq. mi. (83 sq. km). a city in SE Ontario, in S Canada. 28,165. former name of See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. St. Swithin's Day Stu Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language