plural noun Informal.
Origin of tix
by shortening and alteration
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for tix
Historical Examples of tix
Tix's picture hangs in the office of his hotel, and is becoming as famous as the cat.Concerning Cats
Helen M. Winslow
Word Origin for tix
C20: from tics, shortened from tickets
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
short for tickets, by 1947, originally headlinese.
Online Etymology Dictionary, © 2010 Douglas Harper