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.
Wiktionary (0.00 / 0 votes) Rate this definition: tat (Noun) cheap and vulgar tastelessness; sleaze. tat (Noun) cheap, tasteless, useless goods; trinkets. tat (Noun) a form of looped and knotted lace needlework made from a single thread; often used to refer to academic or liturgical dress. tat (Noun) A tattoo. tat (Verb) To make (something by) tatting. Tat (ProperNoun)