Meaning of QUADRATURE in English

QUADRATURE

n.1 Math. the process of constructing a square with an area equal to that of a figure bounded by a curve, e.g. a circle.

2 Astron. a each of two points at which the moon is 90° from the sun as viewed from earth. b the position of a heavenly body in relation to another 90° away.

Etymology: F quadrature or L quadratura (as QUADRATE)

Oxford English vocab.      Оксфордский английский словарь.