/ Dictionary / Index G GTS: Meaning and Definition of Find definitions for: GTS Pronunciation: [key] gas turbine ship. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. GTP gtt. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language