/ Dictionary / Index P planimetry: Meaning and Definition of Find definitions for: pla•nim•e•try Pronunciation: (plu-nim'i-trē), [key] — n. the measurement of plane areas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. planimeter planing hull Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language