Ted Pettit, The World's Laziest Excel Power User. Views. x>=y means x is greater than or equal to y. You have to write it that way, x=>y is not allowed. Likewise, x<=y means x is lesser than or equal to y. And, you have to write it that way, x=<y is not allowed.
Freebase(0.00 / 0 votes)Rate this definition: Tic-tac. Tic-tac is a traditional method of signs used by bookmakers to communicate the odds of certain horses. Until the turn of the 21st Century it was a very common sight on racecourses in the UK, but with the advent of mobile technology it is now seldom seen.
The complete rules for Tic Tac Toe, with variants. Tic Tac Toe is a simple game which, if played optimally by both players, will always result in a tie. However, many players (especially younger children) still enjoy it, and Tic Tac Toe can be made significantly more complex by increasing the size of the board.