/ Dictionary / Index W welded tuff: Meaning and Definition of Find definitions for: weld'ed tuff' Pronunciation: [key] — Petrol. Petrol. ignimbrite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. weld weldment Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language