Definitions

from The Century Dictionary.

  • noun The act of irradiating; emission of rays of light.
  • noun An appearance of radiated light; luster; splendor.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The act of irradiating; emission of rays of light.
  • noun That which irradiates or is irradiated; luster; splendor; irradiation; brilliancy.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics The radiant power received by unit area of surface
  • noun The act of irradiating; emission of rays of light.
  • noun That which irradiates or is irradiated; lustre; splendour; brilliancy.

Etymologies

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