Definitions

1. adjective

Having no center or middle; radially symmetrical.

“The centerless wheel design provides improved aerodynamics.”

2. noun

A cutting tool used to make a workpiece round, by cutting away the center.

“The machinist used a centerless grinder to finish the shaft.”

3. noun

A process of grinding or cutting without the use of a center.

“The company uses a centerless grinding process for its bearings.”