11 letters · 18 points in Scrabble
noun an accurate clock (especially used in navigation)
originFrom chrono- + -meter, possibly after the model of earlier French chronomètre (“metronome”), ultimately from Ancient Greek χρόνος (khrónos, “time”) + μέτρον (métron, “meter, measuring device”).
Etymology from Wiktionary, CC BY-SA 3.0