AskDefine | Define quadratic

Dictionary Definition

quadratic adj
1 of or relating to or resembling a square; "quadratic shapes"
2 of or relating to the second power; "quadratic equation"


1 an equation in which the highest power of an unknown quantity is a square [syn: quadratic equation]
2 a polynomial of the second degree [syn: quadratic polynomial]

User Contributed Dictionary



  1. of a polynomial, involving the second power (square) of a variable but no higher powers, as ax^2 + bx + c.
  2. of an equation, of the form ax^2 + bx + c = 0.
  3. of a function, of the form y = ax^2 + bx + c .


of a class of polynomial of the form y = a.x^2 + b.x + c


  1. A quadratic polynomial, function or equation.

Extensive Definition

In mathematics, the term quadratic describes something that pertains to squares, to the operation of squaring, to terms of the second degree, or equations or formulas that involve such terms. Quadratus is Latin for square.


Algebra (elementary and abstract)


Statistics and stochastics

Number theory


Computer science

  • Quadratic probing, a scheme in computer programming for resolving collisions in hash tables.
  • Quadratic classifier, used in machine learning to separate measurements of two or more classes of objects


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