/ Dictionary / Index S S.T.L.: Meaning and Definition of Find definitions for: S.T.L. Pronunciation: [key] Licentiate in Sacred Theology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. St. Kitts-Nevis-Anguilla St.-Lambert Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language