QUADRATURE
- the finding of a square having the same area as some given curvilinear figure [n -S]
- The process of constructing a square with an area equal to that of a circle, or of another figure bounded by a curve
- The position of the moon or a planet when it is 90░ from the sun as viewed from the earth
- A phase difference of 90░ between two waves of the same frequency, as in the color difference signals of a television screen