12 letters · 17 points in Scrabble
noun muscular twitching involving individual muscle fibers acting without coordination
noun act or process of forming fibrils
originEtymology tree English fibrilla Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation English fibrillation From fibrilla + -ation.
Etymology from Wiktionary, CC BY-SA 3.0