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