Dr. Wilder claims to be the first person to recognize that the 'center of disturbance', center of a ridge pattern, is always where a volar pad exists. Wilder is also noted for the idea that ridges are ridge units fused together, a hypothesis which still remains unproven.
Tic-tac-toe is a game that is traditionally played by being drawn on paper, and it can be played on a computer or on a variety of media. History of Tic Tac Toe An early variation of the game was played in the Roman Empire, around the 1st century B.C.
tic-tac-toenoun [ U ] also tick-tack-toe uk â /ËtÉªk.tÃ¦kËtÉÊ/ us â /ËtÉªk.tÃ¦kËtoÊ/ US UK noughts and crosses. âº a game played on a piece of paper in which two players write either O or X in a pattern of nine squares. It is won by the first player who places three Os or three Xs in a straight line.