quadrilateral

The on-chip quadrilateral MZI network is potentially useful for applications involving optical neural networks, which are created from networks of interconnected nodes.

Oh, and I do have one final question: Doesn’t the Christian quadrilateral protect us from the false dichotomies you imply?

China's East China Sea exercises coincide with a quadrilateral naval exercise in the Philippine Sea that started on Friday involving the United States, Japan, Canada and France.

Days before the quadrilateral exercise, the coast guards of the Philippines, United States and Japan held their first trilateral exercise off the coast of a western Philippine province.

What we call a ring in boxing is actually a quadrilateral, a shape with corners.