so·​lar | \ˈsō-lər, -ˌlär\

Definition of solar 

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

3a : 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

During that time, the number of private solar energy customers in North Carolina is expected to more than double, according to Duke. Cassie Cope, charlotteobserver, "This new solar panel program lets residents, businesses save thousands of dollars," 10 July 2018 But in the early 2000s and 2010s, Idaho Power started seeing more wind and solar contracts come in under the Public Utility Regulatory Policies Act of 1978. Heather Kennison, idahostatesman, "What's it like to rely on renewable energy? Look at life in Idaho.," 26 June 2018 That’s especially true in southern Colorado, a region the National Energy Renewable Laboratory says is home to some of the country’s best land for solar power. Justin Worland/pueblo, Time, "How One Industrial City Is Fighting to Go Green," 12 July 2018 Such tactics are standard practice across most of the competitive residential solar industry. NBC News, "Tesla set to close a dozen solar facilities in nine states," 22 June 2018 The camper is ready to go completely off the grid, fueled by 1,200 watts of solar power, large batteries, and without an ear-drum busting generator. Megan Barber, Curbed, "Go-anywhere luxury camper can stay off the grid for weeks," 31 May 2018 Twelve Austrian companies have presences in Indiana, including solar-energy firm Fronius, marketing-software creator Emarsys and energy drink manufacturer Red Bull. Dwight Adams, Indianapolis Star, "5 quirky highlights from Gov. Eric Holcomb's Europe trip," 24 May 2018 Many rely on solar power, and some live entirely off the electrical grid. CBS News, "New vents spewing lava, gas open up in Hawaii neighborhood," 8 May 2018 Many rely on solar power, and some live entirely off the electrical grid. Caleb Jones, The Christian Science Monitor, "For some, living in Hawaii's paradise means making peace with a volcano," 8 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'solar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of solar

15th century, in the meaning defined at sense 1

History and Etymology for solar

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

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Statistics for solar

Last Updated

3 Nov 2018

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Time Traveler for solar

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

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More Definitions for solar



English Language Learners Definition of solar

: of or relating to the sun

: produced by or using the sun's light or heat


so·​lar | \ˈsō-lər \

Kids Definition of solar

1 : of or relating to the sun a solar eclipse

2 : measured by the earth's course around the sun a solar year

3 : produced or made to work by the action of the sun's light or heat solar energy

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