Definition of "radient"

[…] yet ſtill continued they gazing, extolling above meaſure the excellency of their faces, and the ſparkling luſter of their radient eyes, calling them (by overſtrain’d hyperboles) Starres, Sunnes, Angels, or indeed any thing that love-ſicke imagination fancieth, till by their continued motion their eyes were denyed the ſight of their faces; […]

1639, I. S., Clidamas, or The Sicilian Tale, London: […] Thomas Payne, and are to be sold by Iohn Cowper, […], pages 3–4

When, however, the matin loving lark, or ruſſet pinions, floating amid the tiffany clouds, that variegated, in fleecy undulation, the grey-inveſted heavens, hailed with his ſoul-reviving note, the radient countenance of returning morn; […]

1792, Charlotte Smith, “Letter XII.”, in Desmond. […], volume II, London: […] G[eorge,] G[eorge,] J[ohn] and J[ames] Robinson, […], pages 167–168

We have a Saviour, tell it out among the heathen, that all the nations of the earth may partake of the gift, whoſe radient eye brightens tentively on ſuch a ſubject as this, who are under the domination of the ſenſual affections and appetites; […]

1795, Uzal Ogden, Antidote to Deism. The Deist Unmasked; […]‎, volume 1, Newark: John Woods, page 50