Lewis Short
quādrātūra (noun F) : quadro.
* A making square, squaring, quadrature (postclass.): circuli quadratura, the squaring or quadrature of the circle, App. Dogm. Plat. 3, p. 37, 11.
* Transf., a square: vitreae,Vop. Firm. 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary