rayonnantPronunciation: /ˌreɪjɒˈnɒ̃, ʀɛjɔnɑ̃/Definition of rayonnant adjective relating to or denoting a French style of Gothic architecture prevalent from circa 1230 to circa 1350, characterized by distinctive rose windows. Origin:French, literally 'radiating', from the pattern of radiating lights in the windows
