/ Dictionary / Index P photomorphogenesis: Meaning and Definition of Find definitions for: pho•to•mor•pho•gen•e•sis Pronunciation: (fō"tu-môr"fu-jen'u-sis), [key] — n. plant development that is controlled by light. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photomontage photomosaic Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language