plural of quadrat

(rare) quadratic

simple past tense and past participle of quadrate

present participle of quadrate

Third-person singular simple present indicative form of quadrate

The quality of being quadratic.

(number theory) The mathematical theorem which states that, for given odd prime numbers p and q, the question of whether p is a square modulo q is equivalent to the question of whether q is a square modulo p.

(mathematics) A number (real or complex) which is a solution to an equation of the form x²+Bx+C=0 for some integers B and C. For example 42, or 2+3i, or 1+√/2.

(mathematics) A type of average, calculated as the square root of the mean of the squares, ie. Q=√x_1²+x_2²+...+x_n²/n.

(mathematics) a polynomial equation of the second degree.