a. and v. Obs. [SQUARE a. and v.] a. adj. Biquadrate. b. v. trans. To biquadrate by multiplication.

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1662.  Hobbes, Seven Prob., Wks. 1845, VII. 67. There be some numbers called plane, others solids, others plano-solid, others square, others cubic, others square-square.

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1669.  Newton, in Rigaud, Corr. Sci. Men (1841), II. 284. To which 61/2 square-squared, or multiplied three times into itself, is about equal.

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