/ Dictionary / Index C coronagraph: Meaning and Definition of Find definitions for: co•ro•na•graph Pronunciation: (ku-rō'nu-graf", -gräf"), [key] — n. Astron. an instrument for observing and photographing the sun's corona, consisting of a telescope fitted with lenses, filters, and diaphragms that simulate an eclipse. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Coronado coronal Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language