Abstract: A hinge for a pivoting window or door with a frame and a leaf that can tilt with respect to the frame, whereby the hinge includes a frame part fastened to the frame and a leaf part fastened to the leaf, with a scissor mechanism between the frame part and the leaf part on which the leaf part is hingeably affixed around an axis of rotation, whereby the scissor mechanism comes into operation in a first phase of the tilting movement of the leaf, so that the axis of rotation moves in a direction essentially transverse to the plane of the frame into a locking position whereby the axis of rotation is at a distance from the frame such that the axis of rotation is a fixed axis around which the leaf can tilt further in a second phase of the tilting movement of the leaf.