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is a U.S. all-male college social fraternity founded on June 28, 1920 at University of Central Missouri. The fraternity was born out of the desires and aspirations of seventeen men in the belief that all men are social creatures and that friendships of college men are lasting ones. It rose as a result of friendships made while in the service of their country during World War I in France. By dedicating themselves to the highest ideals of manhood, brotherhood and citizenship, they would inspire thousands of men from all parts of the country who would follow in their footsteps.

In accordance with the founding of Sigma Tau Gamma Fratenity at Central Missouri State Teachers College, the fraternity created new chapters on the campuses surrounding teachers colleges (at the time also called "normal schools"). Since the fraternity's beginnings in 1920, they have since spread to more than 140 university campuses across the United States.
Those Sig Taus are a fraternity of gentlemen.
sig tau by tirpitz3 January 13, 2009
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Short for the Sigma Tau Gamma a national fraternity. Their largest chapter being the Illinois State University Chapter they are known for being one of the hardest partying frats on campus. They are also known on ISU's campus as being "Sooo Frat"
Did you hear about the sick party at the Sig Tau house friday?
Sig Tau by 123Party321 February 22, 2008
Related Words
One of the nationally smallest fraternities, who has been deemed to have the "little man syndrome". aka- they are always trying to prove something.

A group of ego-maniacs who think they are the best that nobody likes or respects. The Fraternity that cares too much about what everybody else thinks and has lame parties. Known at ISU for being "So Fag" and not accepting the fact.
Random Girl 1: Where did you just come from?
Random girl 2: Sig Taus, i'll slit my throat before i go back there....lame.
sig tau by brased April 10, 2008

Sig Taumer 

One Gallon of Arnold Palmer half lemonade and half sweet tea mixed with half fifth of everclear.

Invented by the Theta Chapter of Sigma Tau Gamma
Man that guy drank a whole gallon of Sig Taumer. He is going to be wasted.
Sig Taumer by darklord2k September 1, 2009
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