Useful english dictionary. 2012.
Ittria — It tri*a ([i^]t tr[i^]*[.a]), n. [NL.] See {Yttria}. [1913 Webster] … The Collaborative International Dictionary of English
ittrium — ittria, ittrium, ittro Chem.: see yttria, etc … Useful english dictionary
ittro- — ittria, ittrium, ittro Chem.: see yttria, etc … Useful english dictionary
