Helix meaning : 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. An upside down midair 360° spin in playboating. To form or cause to form a helix.