/ Dictionary / Index U urea-formaldehyde resin: Meaning and Definition of Find definitions for: u•re'a-form•al'de•hyde res"in Pronunciation: (yoo-rē'u-fôr-mal'du-hīd", -fur-, yoor'ē-u-), [key] — Chem. Chem. any of a group of resins formed by the interaction of urea and formaldehyde under conditions that include heat and pH control: used chiefly in the manufacture of buttons, baking enamels, and for making fabrics wrinkle-resistant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. urea cycle urease Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language