1 : the act of conducting or conveying. 2a : transmission through or by means of a conductor; also : the transfer of heat through matter by communication of kinetic energy from particle to particle with no net displacement of the particles â compare convection, radiationb : conductivity.
The name ping-pong was in wide use before English manufacturer J. Jaques & Son Ltd trademarked it in 1901. The name Ping-Pong then came to be used for the game played by the rather expensive Jaques equipment, with other manufacturers calling theirs table tennis.
Table tennis and ping pong are exactly the same game (none of this nonsense of balls bouncing on different or both sides of table) Ping pong was the sound that the ball made when the game first came about, because of the type of bat/racquet used.