solar

adjective

so·​lar ˈsō-lər How to pronounce solar (audio)
-ˌlär
1
: of, derived from, relating to, or caused by the sun
2
: measured by the earth's course in relation to the sun
a solar year
also : relating to or reckoned by solar time
3
a
: produced or operated by the action of the sun's light or heat
solar energy
b
: utilizing the sun's rays especially to produce heat or electricity
a solar house
also : of or relating to such utilization
solar design

Examples of solar in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Chaco Culture National Historical Park, New Mexico This UNESCO World Heritage Site features ancient Puebloan structures aligned with solar events like Casa Rinconada. Emese MacZko, Forbes.com, 6 June 2025 The auroras become visible when solar events like solar flares and coronal mass ejections take place, triggering powerful displays of color in the sky. Skyler Caruso, People.com, 6 June 2025 Some green energy projects in the city might stay lit for longer, such as the solar and wind-powered Ricoh Americas billboard in Times Square. Sarah Durn, Popular Science, 5 June 2025 Hotel Willa also offers EV chargers and powers half of its gallery with solar energy. Carrie Honaker, Travel + Leisure, 5 June 2025 See All Example Sentences for solar

Word History

Etymology

Middle English, from Latin solaris, from sol sun; akin to Old English & Old Norse sōl sun, Lithuanian saulė, Greek hēlios

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of solar was in the 15th century

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Cite this Entry

“Solar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar. Accessed 10 Jun. 2025.

Kids Definition

solar

adjective
so·​lar ˈsō-lər How to pronounce solar (audio)
-ˌlär
1
: of, derived from, relating to, or caused by the sun
2
: measured by the earth's course in relation to the sun
solar time
solar year
3
a
: produced or operated by the action of the sun's light or heat
solar energy
b
: using the sun's rays especially to produce heat or electricity
a solar house
Etymology

Middle English solar "derived from or related to the sun," from Latin solaris (same meaning), from sol "sun" — related to sunday see Word History at sunday

More from Merriam-Webster on solar

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