/ Dictionary / Index B biquadrate: Meaning and Definition of Find definitions for: bi•quad•rate Pronunciation: (bī-kwod'rāt, -rit), [key] — n. Math. the fourth power. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: biquadrate (Thesaurus) bipyramid biquadratic Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language