luxullianite in English dictionary luxullianite Meanings and definitions of "luxullianite" noun (mineralogy) A kind of granite characterized by the presence of radiating groups of minute tourmaline crystals. more Grammar and declension of luxullianite luxullianite (countable and uncountable, plural luxullianites) more Luxullianite Sample sentences with "luxullianite" Declension Stem Try again Available translations Cornish French Irish Italian Authors