/ Dictionary / Index P planet-struck: Meaning and Definition of Find definitions for: plan•et-struck Pronunciation: (plan'it-struk"), [key] — adj. affected adversely by the supposed influence of a planet. stricken with terror; panic-stricken. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plane trigonometry planet X Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language