/ Dictionary / Index P photokinesis: Meaning and Definition of Find definitions for: pho•to•ki•ne•sis Pronunciation: (fō"tō-ki-nē'sis, -kī-), [key] — n. Physiol. movement occurring upon exposure to light. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photojournalism photo layout Related Content Daily Word Quiz: ravenous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language