/ Dictionary / Index P planigraph: Meaning and Definition of Find definitions for: pla•ni•graph Pronunciation: (plā'ni-graf", -gräf", plan'i-), [key] — n. Med. an x-ray photograph in which a given plane of the body is well defined and those above and below it purposely out of focus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. planify planimeter Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language