Breadcrumb Home > Dictionary > Index X x-ray star: Meaning and Definition of Find definitions for: x'-ray star" Pronunciation: [key] a star, usually a binary star, that is a strong emitter of x-rays, as Cygnus X-1. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. x-ray photograph x-ray technician ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language