10 letters · 14 points in Scrabble
noun a measuring instrument for measuring the area of an irregular plane figure
originEtymology tree English plani- Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)der. English -meter English planimeter From plani- + -meter.
Etymology from Wiktionary, CC BY-SA 3.0