37 definitions of GTO. Meaning of GTO. What does GTO stand for? GTO abbreviation. Define GTO at freespielebookofra.win. 5 definitions of GTO. Definition of GTO in Military and Government. What does GTO stand for?. This Internet Slang page is designed to explain what the meaning of GTO is. The slang word / acronym / abbreviation GTO means . Internet Slang. A list of. A very rare, but bad-ass muscle car also know as the " goat ". I'm not sure on this, but I think it was the fastest road legal car in the world for some time. Look up GTO in Wiktionary, the free dictionary. At mph it was an extremely fast car for the times. Pamela Pinta and Wetter rom märz Gross, PhD.