YTTRIA, noun [so called from Ytterby, a quarry in Sweden.] One of the earths. It has the appearance of a fine white powder, without taste or smell. It is insoluble in water, and does not affect vegetable blues. It combines with acids and forms salts. Its base is yttrium.
YTTRIOUS, adjective Pertaining to yttria; containing yttria; as the yttrious oxyd of columbium.
YTTRIUM, noun The base of yttria.