insolation

noun

1. exposure to the sun’s rays, especially as a process of treatment.
2. sunstroke.

noun Meteorology.

1. solar radiation received at the earth’s surface.

noun

1. the quantity of solar radiation falling upon a body or planet, esp per unit area
2. exposure to the sun’s rays
3. former name for sunstroke

1. The solar radiation striking Earth or another planet.
2. The rate of delivery of solar radiation per unit of horizontal surface.