Meaning of thoria

tho•ri•a

Pronunciation: (thôr'ē-u, thōr'-), [key]
— n. Chem.
  1. a white, heavy, water-insoluble powder, ThO, used chiefly in incandescent mantles, as the Welsbach gas mantle. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.