helix

A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase.

A small volute under the abacus of a Corinthian capital.

The incurved rim of the external ear.

helix piercing

An upside down midair 360° spin in playboating.

To form or cause to form a helix.

A large positive inclination gives a chip which will helix out of the space between the face mill and the workpiece.

When the shaft is unsupported, the large torque tends to helix the inner core, and if the casing is not stiff enough, it will helix the casing also.