10 letters · 14 points in Scrabble
noun a measuring instrument for measuring the vital capacity of the lungs
originEtymology tree Proto-Indo-European *(s)peys-der.? Latin spīro 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 spirometer From Latin spīro (“to breathe”) + English -meter.
Etymology from Wiktionary, CC BY-SA 3.0