/ Dictionary / Index S sea trials: Meaning and Definition of Find definitions for: sea' tri"als Pronunciation: [key] a series of trial runs to test the performance of a new ship. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seatrain sea trout Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language