definition of
centering

[1] #1 centering n. [focus, focusing, focussing, focal point, direction] the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life". wn

[2] #2 centering n. [snap] (American football) putting the ball in play by passing it (between the legs) to a back; "the quarterback fumbled the snap". wn