gradational

The Tour B XS also uses a gradational core design that gets firmer as it moves to out toward the cover to produce better energy transfer and less spin.

All the balls in the series will feature versions of Bridgestone’s gradational core design that gets firmer as it moves to out toward the cover to produce better energy transfer and less spin.

The e5 uses a urethane cover over top of a large, soft compression core that gets gradationally firmer as you move out from the center.

I suspended and hesitated a little, and at length told him that there was an understanding—a—a—kind of—in short, he squeezed the whole secret out o' me gradationally.

I have had grand success this morning in tracing gradational steps by which the peacock tail has been developed: I quite feel as if I had seen a long line of its progenitors.