a sudden and sometimes fatal affection due to exposure to the sun's rays or to excessive heat, marked by prostration with or without fever, convulsion, and coma.
The solar radiation striking Earth or another planet.
The rate of delivery of solar radiation per unit of horizontal surface.
sun·stroke (sŭn'strōk') n. Heat stroke caused by exposure to the sun and characterized by a rise in temperature, convulsions, and coma. Also called insolation, siriasis.