heliosis

Etymology

From Ancient Greek ἡλίωσις (hēlíōsis, “exposure to the sun”). By surface analysis, helio- + -osis.

noun

  1. Sunstroke.
  2. Sunburn.
  3. Exposure to the sun.
  4. Scorching of plants by the sun.
  5. A sunroom or solarium of the Ancient Greeks.“The Greeks had their helioses and the Romans their solaria; yet heliotherapy has as yet scarcely emerged from the most empiric of performances into the dignity of a scientifically justified or rationalized procedure.”