/ Dictionary / Index X xylo-: Meaning and Definition of Find definitions for: xylo- Pronunciation: [key] a combining form meaning “wood,” used in the formation of compound words: xylophilous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. xylitol xylograph Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language