conic section

In mathematics, a conic section (or just conic) is a curve that can be formed by intersecting a cone (more precisely, a right circular conical surface) with a plane. The conic sections were named and studied as long ago as 200 BC, when Apollonius of Perga undertook a systematic study of their properties.
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Noun
1. (geometry) a curve generated by the intersection of a plane and a circular cone
(synonym) conic
(hypernym) plane figure, two-dimensional figure
(hyponym) ellipse, oval
(classification) geometry

The generic term for circles, ellipses, parabolas and hyperbolas. The term derives from the fact that all of these shapes can be produced by taking a cone and "slicing" it in various ways.

n.
سکھر , کاٹ ناپ , تراش مخروطي يا گجر ڈول

CONICA. SEZIONE CONICA