insolation
/ˌɪnsəʊˈleɪʃən/noun
mass noun
1- technical exposure to the sun's rays〈技〉曝晒。
1.1
- the amount of solar radiation reaching a given area（某地区的）日射量。
词源
early 17th cent.: from Latin insolatio（n-）, from the verb insolare, from in- 'towards' + sol 'sun'.