quadric cone

quadric cone

[′kwä·drik ¦kōn]
(mathematics)
A conical surface whose directrices are conic curves.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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If Q is a quadric cone, then C is arithmetically Cohen-Macaulay ([16, V, Ex.
Quadric cones determine a codimension 1 subset in the set of hyperquadrics in [P.sup.5], i.e., quadric cones determine a set of dimension 19.