Quadratic

Quad*rat"ic

(?), a. [Cf. F. quadratique.]
[1913 Webster]

1. Of or pertaining to a square, or to squares; resembling a quadrate, or square; square.
[1913 Webster]

2. (Crystallog.) Tetragonal.
[1913 Webster]

3. (Alg.) Pertaining to terms of the second degree; as, a quadratic equation, in which the highest power of the unknown quantity is a square.
[1913 Webster]

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Fri 10th February 2012