Rayonnant a. : Darting forth rays, as the sun when it shines out.

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Taxonomy
Rayonnant, tracery, bar tracery, Nicaise, facade, Architecture, free encyclopedia, nave, the Church, blind tracery, triforium, decorative elements, French Gothic architecture, art historians, pinnacles, architects, Europe, High Gothic.

Defination from the web:
Rayonnant is characterised by a shift in focus away from the great scale and spatial rationalism of ... After the mid 14th century, Rayonnant gradually evolved into the Late Gothic, Flamboyant style, though as usual with such arbitrary stylistic ...