{"data":{"fields":"term_definition","term_definition":"<div class=\"definition\">The angle in a plane perpendicular to the axial plane of a circular peripheral-mill cutter between the axial plane passing through the tip of the cutter blade and the sharpening plane. For a face-mill cutter, this is the angle between an axial plane containing the blade tip and the blade front face, measured in the rotation plane of the cutter head (see also Radial Rake Angle).<\/div>"}}