Dictionary
bi•quad•rat•ic
Pronunciation: (bī"kwo-drat'ik), [key] Math.
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adj.
involving the fourth, but no higher, power of the unknown or variable.
—
n.
1. quartic (def. 2).
2. biquadrate.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.