1. (a.) Relating to Titans, or fabled giants of ancient mythology; enormous in size or strength; as, titanic structures\.

2. (a.) of or pertaining to titanium; derived from, or containing, titanium; specifically, designating those compounds of titanium in which it has a higher valence as contrasted with the titanous compounds.

Atlantean Brobdingnagian Cyclopean Gargantuan Herculean Homeric abysmal amplitudinous astronomic astronomical awesome boundless bulky colossal cosmic cyclopean elephantine enormous epic extensive galactic gargantuan giant giantlike gigantic heroic huge immeasurable immense infinite jumbo king-size large mammoth massive massy mighty monster monstrous monumental mountainous outsize overgrown prodigious profound sizable spacious stupendous towering tremendous vast voluminous weighty