Definition of rayonnant in English:
Relating to or denoting a French style of Gothic architecture prevalent from circa 1230 to circa 1350, characterized by distinctive rose windows.
- The Sainte-Chapelle is a superb example of the Rayonnant style in Gothic architecture.
- Rayonnant Gothic is a type of Gothic that originated around the court of saint-Louis (Louis IX of France).
French, literally 'radiating', from the pattern of radiating lights in the windows.