9 letters · 11 points in Scrabble
adjective pertaining to or containing aluminum or alum
originEtymology tree English alumina Proto-Indo-European *h₃ed- Proto-Indo-European *-os Proto-Indo-European *h₃édosder.? Proto-Italic *-ōtsos or *-otsos Latin -ōsus Old French -usbor. Middle English -ous English -ous English aluminous From alumina + -ous.
Etymology from Wiktionary, CC BY-SA 3.0