Definition of: insolation

(in′sō·lā′shən) noun
1. The act of insolating; exposure to the rays of the sun.
2. Sunstroke.
3. A method of treating disease by exposure to the rays of the sun.
4. A disease in plants caused by exposure to the sun.
5. Meteorol, a Solar radiation received by the earth or other planets. b The rate of delivery of such radiant energy per unit of horizontal surface.