Word Study
quadric
CIDE DICTIONARY
quadric, a.
Of or pertaining to the second degree. [1913 Webster]
quadric, n.
A quantic of the second degree. See Quantic. [1913 Webster]
OXFORD DICTIONARY
quadric, adj. & n. Geom.
--adj. (of a surface) described by an equation of the second degree.
--n. a quadric surface.
--adj. (of a surface) described by an equation of the second degree.
--n. a quadric surface.
Etymology
L quadra square
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