undulationism التعريفات والمعاني == English == === Etymology === From undulation + -ism. === Noun === undulationism (uncountable) The theory that light is a wave. شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة undulationist undulations undulationibus undulationi undulationists undulationis undulationes undulationem undulationum