13 letters · 21 points in Scrabble
noun an organelle containing enzymes responsible for producing energy
originFrom German Mitochondrium, coined by Carl Benda in 1898, from Ancient Greek μίτος (mítos, “thread”) + χονδρίον (khondríon), diminutive of χόνδρος (khóndros, “grain, morsel”).
Etymology from Wiktionary, CC BY-SA 3.0