n. [ NL., fr. L. Titani or Titanes, Gr. &unr_;, the sons of the earth. ] (Chem.) An elementary substance found combined in the minerals manaccanite, rutile, sphene, etc., and isolated as an infusible iron-gray amorphous powder, having a metallic luster. It burns when heated in the air. Symbol Ti. Atomic weight 48.1. [ 1913 Webster ]