/ Dictionary / Index T thunderous: Meaning and Definition of Find definitions for: thun•der•ous Pronunciation: (thun'dur-us, -drus), [key] — adj. producing thunder or a loud noise like thunder: thunderous applause. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thunderous (Thesaurus) thunder mug thunderpeal Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language