Don't have a clue what this stands for, but it's a digital theatrical sound system developed by Lucasfilm Ltd. It was named after the classic George Lucas film, THX-1138.
"That megaplex near the mall has THX!"
by star8706 February 01, 2003
A commonly used word for the lazy asses, who dont have the energy to type "6" letters.
man:You have a big ass, ass.
by ...White Female. November 11, 2004