An Etymological Dictionary of Astronomy and Astrophysics

1. (Of light) produced by → incandescence.
   

2. Glowing or → white with → heat.
   

3. Intensely → bright; brilliant (Dictionary.com).

Etymology (EN): From Fr., from L. incandescent-, incandescens, p.p. of incandescere “to become hot,” from → in- + candescere “to become hot,” from candere “to glow.”

Etymology (PE): Foruzandé, agent noun and verbal adj. from foruzidan, → glow.