rayon

noun3

1. •
   A manufactured regenerated cellulosic fiber.
2. •
   A circular area whose extent is measured by the length of the radius of the circle which bounds it.

   • Within a rayon of a certain number of miles. — 1878
3. •
   (no longer used, rare) A ray or beam of light.

   • Nor brick, nor marble was the wall in view, But shining Christall, which from top to base Out of her womb a thousand rayons threw, […] — 1591