7 letters · 12 points in Scrabble
noun an instrument or substance used to destroy tissue for medical reasons (eg removal of a wart) by burning it with a hot iron or an electric current or a caustic or by freezing it
noun the act of coagulating blood and destroying tissue with a hot iron or caustic agent or by freezing
originFrom Latin cauterium (“branding iron”).
Etymology from Wiktionary, CC BY-SA 3.0