### Definition of Quadric

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

Exact synonyms: Quadric Surface
Generic synonyms: Curve, Curved Shape
Specialized synonyms: Hyperboloid

### Definition of Quadric

1. a. Of or pertaining to the second degree.

2. n. A quantic of the second degree. See Quantic.

### Definition of Quadric

1. Noun. (mathematics) A surface whose shape is defined in terms of a quadratic equation ¹

¹ Source: wiktionary.com

### Definition of Quadric

1. a type of geometric surface [n -S]

### Medical Definition of Quadric

1. A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics. Of or pertaining to the second degree. Source: Websters Dictionary (01 Mar 1998)

### Quadric Pictures

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### Lexicographical Neighbors of Quadric

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### Literary usage of Quadric

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

1. A Treatise on Universal Algebra: With Applications by Alfred North Whitehead (1898)
"TRANSFORMATION OF A quadric INTO ITSELF. (1) When a triple group is semi-latent, the matrix must transform the director generators of the associated quadric ..."

2. A Treatise on the Mathematical Theory of Elasticity by Augustus Edward Hough Love (1906)
"Y'?, ____ The quadric surface (10) is called the stress quadric. It has the property that the normal stress across any plane through its centre is inversely ..."

3. A Treatise on the Mathematical Theory of Elasticity by Augustus Edward Hough Love (1906)
"It has the property that the normal stress across any plane through its centre is inversely proportional to the square of that radius vector of the quadric ..."

4. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1900)
"On the condition that five straight lines situated in a space of four dimensions should lie on a quadric. By HW RICHMOND, MA, Fellow of King's College. ..."

5. A Treatise on the Analytic Geometry of Three Dimensions by George Salmon (1862)
"The reciprocal of a quadric is a quadric, since it may be easily deduced, from Art. 75, that but two tangent planes can be drawn to the quadric through an ..."

6. Projective Geometry by Oswald Veblen, John Wesley Young (1918)
"The projective group of a quadric. According to the definition in ยง 104, Vol. I, a quadric may be regarded as the set of points of intersection of the lines ..."

7. A Treatise on the Analytic Geometry of Three Dimensions by George Salmon (1882)
"The vertices of two self-conjugate tetrahedra, with respect to a quadric form a system of ... Let any quadric be described through the four vertices of one ..."