/ Dictionary / Index P phototopography: Meaning and Definition of Find definitions for: pho•to•to•pog•ra•phy Pronunciation: (fō"tō-tu-pog'ru-fē), [key] — n. topographical surveying employing photogrammetric methods. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phototonus phototoxin Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language