conoid
A ruled surface generated by sliding a straight line with one end on a straight line segment and the other on a plane curve. Depending on the curve, a conoid may be circular, elliptic, or parabolic. (Ching, 1995)
A ruled surface generated by sliding a straight line with one end on a straight line segment and the other on a plane curve. Depending on the curve, a conoid may be circular, elliptic, or parabolic. (Ching, 1995)