7 letters · 19 points in Scrabble
noun a cgs unit of magnetic flux equal to the flux perpendicular to an area of 1 square centimeter in a magnetic field of 1 gauss
noun Scottish physicist whose equations unified electricity and magnetism and who recognized the electromagnetic nature of light (1831-1879)
originFrom an earlier form Mackeswell, meaning "Mack's well or spring", from Old English welle (“well”).
Etymology from Wiktionary, CC BY-SA 3.0