Dictionary![]() ![]() quad•rat•icPronunciation: (kwo-drat'ik), [key] —adj. 1. square. 2. Algebra.involving the square and no higher power of the unknown quantity; of the second degree. —n. a quadratic polynomial or equation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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