- (meteorology) The incident radiant energy emitted by the sun which reaches a unit horizontal area of the Earth's surface; the rate of delivery of such radiation
- The act or process to exposing to the rays of the sun for the purpose of drying or maturing, as fruits, drugs, etc., or of rendering acid, as vinegar.
- (medicine) sunstroke.
- (medicine) Exposure of a patient to the sun's rays; a sun bath.
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Full Definition of insolation