heliosis

noun5

1. •
   Sunstroke.
2. •
   Sunburn.
3. •
   Scorching of plants by the sun.
4. •
   Exposure to the sun.
5. •
   (historical) A sunroom or solarium of the Ancient Greeks.

   • The Greeks and Romans constructed in their homes special sun parlors (called helioses or thermae). — 1933