QUADRATURE
\kwˈɒdɹət͡ʃə], \kwˈɒdɹətʃə], \k_w_ˈɒ_d_ɹ_ə_tʃ_ə]\
Definitions of QUADRATURE
 2010  New Age Dictionary Database
 1913  Webster's Revised Unabridged Dictionary
 1894  The Clarendon dictionary
 1914  Nuttall's Standard dictionary of the English language
 1874  Etymological and pronouncing dictionary of the English language
 1871  The Cabinet Dictionary of the English Language
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A quadrate; a square.

The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.

The position of one heavenly body in respect to another when distant from it 90Â¡, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition.
By Oddity Software

A quadrate; a square.

The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.

The position of one heavenly body in respect to another when distant from it 90Â¡, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition.
By Noah Webster.

Act of squaring; act of finding a square of equal area with a given curvilinear figure; position of a heavenly body when 90Â° distant from another.
By William Hand Browne, Samuel Stehman Haldeman

The act of squaring; the reducing of a figure to a square; a quadrate distance of 90 of a heavenly body from another, specially of the moon from the sun.
By Nuttall, P.Austin.

The act of squaring; the reducing of a figure to a square; in astron., the position of a heavenly body, when the lines from the earth to the moon in its first and last quarters.
By Stormonth, James, Phelp, P. H.

n. The act of squaring or reducing to a square ; the finding of a square having the same area as a given curvilinear figure, as a circle; the position of one heavenly body in respect to another when distant from it ninety degrees ; hence, the first and last quarters of the moon.
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