adj. of a polynomial, involving the second power (square) of a variable but no higher powers, as .
adj. of an equation, of the form .
adj. of a function, of the form .
n. A quadratic polynomial, function or equation.
the GNU version of the Collaborative International Dictionary of English
adj. Of or pertaining to a square, or to squares; resembling a quadrate, or square; square.
adj. Tetragonal.
adj. Pertaining to terms of the second degree.
The Century Dictionary and Cyclopedia
In algebra, involving the square and no higher power of the unknown quantity or variable of the second degree; of two dimensions.
In crystallography, tetragonal or dimetric: applied to the system that includes the square prism and related forms. See crystallography.
n. In algebra, an equation in which the highest power of the unknown quantity is the second, the general form being
n. plural That branch of algebra which treats of quadratic equations.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a polynomial of the second degree
n. an equation in which the highest power of an unknown quantity is a square
adj. of or relating to the second power
adj. of or relating to or resembling a square
Word Usage
"Then he got out note-book and algebra and lost himself in quadratic equations, while the hours slipped by, and the stars dimmed, and the gray of dawn flooded against his window."