1. Noun. A curve or surface whose equation (in Cartesian coordinates) is of the second degree.

Generic synonyms: Curve, Curved Shape
Specialized synonyms: Hyperboloid

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### Literary usage of Quadric surface

Below you will find example usage of this term as found in modern and/or classical literature:

1. Projective Differential geometry of Curves and ruled Surfaces by Ernest Julius Wilczynski (1906)
"The osculating quadric surface. A quadric surface is determined by nine points. If we pass a quadric through nine points of the curve, and allow them to ..."

2. The Theory and Practice of Absolute Measurements in Electricity and Magnetism by Andrew Gray (1893)
"... (110) Now if we consider the quadric surface of which the equation is r\pP + ... a, n. determined by reference to a certain quadric surface. ..."

3. The Collected Mathematical Papers of Arthur Cayley by Arthur Cayley (1896)
"THE following theorem was communicated to me by Dr Klein ; " given in regard to a quadric surface two sibi-reciprocal line-pairs, the two tractors (or lines ..."

4. A Treatise on Universal Algebra: With Applications by Alfred North Whitehead (1898)
"0, is the equation of a quadric surface. Hence the common null lines of a triple group G are generators of a quadric surface. The director lines therefore, ..."

5. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1876)
"1°, when the terms "normal" &c. are used in the ordinary sense, and the equation of the quadric surface (assumed to be an ellipsoid) is taken to be — ..."

6. The Kansas University Science Bulletin by University of Kansas (1902)
"COLLINEATIONS OF SPACE WHICH LEAVE INVARIANT A quadric surface. BY HELEN B. BREWSTER. 1. In an article published in the "Annals of Mathematics," second ..."