12 letters · 18 points in Scrabble
originEtymology tree Pre-Greek der. Proto-Hellenic *gayader. Ancient Greek γαῖᾰ (gaîă)clip. Ancient Greek γῆ (gê) Ancient Greek -ο- (-o-) Ancient Greek γεω- (geō-)der. English geo- English magnetism English geomagnetism From geo- + magnetism.
Etymology from Wiktionary, CC BY-SA 3.0