insolation

English

Borrowed from French insolation, from Latin insolatio (“a setting or placing in the sun”).

insolation (usually uncountable, plural insolations)

The incident radiant energy emitted by the sun which reaches a unit area over a period of time, typically measured over a horizontal area at the Earth's surface or at the top of Earth's atmosphere.
The rate of delivery of such radiation.
The act or process of exposing to the rays of the sun, such as for the purpose of medical treatment, drying or maturing, as fruits, drugs, etc., or of rendering acid, as vinegar.
(medicine, dated) sunstroke.

sun's radiant energy per unit area

rate of delivery

exposure to the rays of the sun

Finnish: aurinkohoito (medical treatment), aurinkokylpy (chiefly cosmetic treatment); aurinkokuivaus (drying); aurinkokypsytys (maturing)
Greek: ηλιασμός (el) m (iliasmós)
Spanish: insolación (es) f

medicine: sunstroke — see sunstroke

Learned borrowing from Latin īnsōlātiō.

insolation f (plural insolations)

sunstroke, insolation (heatstroke caused by an excessive exposure to the sun's rays)
- 1905, Pierre Marge, Le Tour de l'Espagne en Automobile‎:
  —Mais vous êtes fou d'aller en Espagne en été; sachez que la chaleur y est torride, insupportable. —Qu'importe, nous nous vêtirons légèrement, ai-je répondu. —Vous attraperez des insolations. —Nous nous coifferons de larges panamas!
  But you are crazy, going to Spain in summer; you know that the heat there is torrid, it's unbearable. ―No matter, we will dress lightly, I responded. ―You'll get sunstroke. ―We'll wear big Panama hats!