IPA: //ˈkwɒdʒəˌtʃʊə//
KK: /ˈkwɒdʒəˌtʃʊr/
A term used in astronomy and mathematics that refers to a specific arrangement or process involving angles or areas, particularly where one celestial body is positioned 90 degrees from another, or the method of creating a square with the same area as a given shape.
In astronomy, the moon is said to be in quadrature with the sun when it is 90 degrees away from the sun in the sky.
Quadrature → It is formed from "quadra" (from Latin *quadratum*, meaning square) and "-ure" (a suffix used to form nouns indicating an action or result). The word "quadrature" refers to the process of determining the area of a square or the action of squaring a number.
Think of 'square' ('quadra') and the action of determining an area ('-ure') — that's why quadrature relates to finding the area of a square.