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
Many Democrats had hoped that increasing development of alternative power sources, particularly solar and wind, would provide cheaper electricity as renewable energy is not subject to the erratic pricing and market fluctuation dynamics of fossil fuel sources.
—
Tom Rogers, MSNBC Newsweek, 6 Nov. 2025
On the Moon, solar power is a tremendous asset, as there’s no atmosphere, no cloud cover, and no absorption of radiation that occurs on the way down.
—Big Think, 6 Nov. 2025
And the country is also signing major investments in solar, offshore wind, and upgrades to grid infrastructure, which will raise renewable energy’s share of the electricity mix to 15% this year, up from just 5% in 2016.
—John Kerry, semafor.com, 6 Nov. 2025
The sun's magnetic field reached its solar maximum phase of its 11-year cycle in October 2024, which has led to an increase in northern lights activity, according to NASA.
—Julia Jacobo, ABC News, 6 Nov. 2025
See All Example Sentences for solar
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Tom Rogers, MSNBC Newsweek, 6 Nov. 2025
On the Moon, solar power is a tremendous asset, as there’s no atmosphere, no cloud cover, and no absorption of radiation that occurs on the way down.
—Big Think, 6 Nov. 2025
And the country is also signing major investments in solar, offshore wind, and upgrades to grid infrastructure, which will raise renewable energy’s share of the electricity mix to 15% this year, up from just 5% in 2016.
—John Kerry, semafor.com, 6 Nov. 2025
The sun's magnetic field reached its solar maximum phase of its 11-year cycle in October 2024, which has led to an increase in northern lights activity, according to NASA.
—Julia Jacobo, ABC News, 6 Nov. 2025
See All Example Sentences for solar
Cite this Entry
“Solar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar. Accessed 9 Nov. 2025.
Copy CitationKids Definition
solar
adjective
so·lar
ˈsō-lər 
-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
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