quadrature
noun
quad·ra·ture ˈkwä-drə-ˌchu̇r 
-chər,
-ˌtyu̇r,
-ˌtu̇r
1
: a configuration in which two celestial bodies (such as the moon and the sun) have an angular separation of 90 degrees as seen from the earth
2
: the process of finding a square equal in area to a given area
Example Sentences
Recent Examples on the Web Wi-Fi 7 will also increase throughput by up to 20 percent by moving from Wi-Fi 6/6E's 1,024 quadrature amplitude modulation (QAM) to 4,096 QAM while adding multi-link operation (MLO) and multi-resource unit puncturing. 
Scharon Harding, Ars Technica, 4 Aug. 2022 In common usage, many think of dichotomy and quadrature as synonymous. Todd Nelson, Star Tribune, 3 May 2021
Scharon Harding, Ars Technica, 4 Aug. 2022 In common usage, many think of dichotomy and quadrature as synonymous. Todd Nelson, Star Tribune, 3 May 2021 Word History
First Known Use
1591, in the meaning defined at sense 1