insolation

I1N1S1O1L1A1T1I1O1N1
US/ˌɪnsoʊˈleɪʃən/

noun

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 difference in insolation between north-facing and south-facing slopes can affect microclimates as much as hundreds of miles of north-south distance on level ground.”

UncommonScrabble 10

Meanings

nouninsolation (usually uncountable, plural insolations)

plural insolations

  1. uncountableusuallyThe 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 difference in insolation between north-facing and south-facing slopes can affect microclimates as much as hundreds of miles of north-south distance on level ground.

  2. uncountableusuallyThe rate of delivery of such radiation.
  3. uncountableusuallyThe 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.

    Synonyms: sunbath

  4. dateduncountableusuallymedicinesunstroke.

Synonyms & antonyms

nounThe 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.

Similar

More synonyms by meaning

nounsudden prostration due to exposure to the sun or excessive heat

Similar
sunstrokethermic feversiriasis
Broader
heatstrokeheat hyperpyrexia

nountherapeutic exposure to sunlight

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latininsolatio“a setting or placing in the sun”
  2. Frenchinsolation
  3. Englishinsolation

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

Full word history & related roots →

Translations

Finnish insolaatio, auringonsäteily
  • insolaatiosun's radiant energy per unit area
  • auringonsäteilysun's radiant energy per unit area
  • insolaatiorate of delivery
  • auringonsäteilyn voimakkuusrate of delivery
  • aurinkohoitoexposure to the rays of the sun
  • aurinkokylpyexposure to the rays of the sun
  • aurinkokuivausexposure to the rays of the sun
  • aurinkokypsytysexposure to the rays of the sun
Greek ηλιασμός
  • ηλιασμός (iliasmós)exposure to the rays of the sun
Irish grianrú
  • grianrúexposure to the rays of the sun
Māori hihirā, hihi kōmaru
  • hihirāsun's radiant energy per unit area
  • hihi kōmarusun's radiant energy per unit area
Polish nasłonecznienie, insolacja
  • nasłonecznieniesun's radiant energy per unit area
  • insolacjasun's radiant energy per unit area
Spanish insolación, insolación
  • insolaciónsun's radiant energy per unit area
  • insolaciónexposure to the rays of the sun

Rhymes & wordplay

Rhymes with insolation

All rhymes →
Cite this entry
APA

insolation. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/insolation

MLA

“insolation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/insolation. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “insolation,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/insolation.

Source: insolation on Wiktionary, CC BY-SA 4.0.