14 letters · 22 points in Scrabble
noun a plant structure that produces megaspores
originFrom neo-Latin, from mega- (“major”) + sporangium. The prefix is from Ancient Greek μέγας (mégas, “great”), and the base from spora + Ancient Greek ἀγγεῖον (angeîon, “vessel”).
Etymology from Wiktionary, CC BY-SA 3.0