Meaning of QUADRATURE in English

QUADRATURE

[ 'kwɒdrətʃə ]

■ noun

1》 Mathematics the process of constructing a square with an area equal to that of a circle or other curved figure.

2》 Astronomy the position of the moon or a planet when 90° from the sun in the sky.

3》 Electronics a phase difference of 90° between two waves of the same frequency.

Origin

C16: from L. quadratura 'a square', from quadrare (see quadrate ).

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.