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 energyb : utilizing the sun's rays especially to produce heat or electricity a solar house; also : of or relating to such utilization solar design
Recent Examples of solar from the Web
Besides the usual supplies, the 6,000-pound shipment includes mice and flies for research, a new kind of roll-up solar panel and a neutron star detector.
But now, even as President Trump pulls the United States out of the pact, India has undergone an astonishing turnaround, driven in great part by a steep fall in the cost of solar power.
Then its 158-foot solar array – equal to the wingspan of a Boeing 767 – will be unfolded to power the satellite’s electric propulsion system to finish the climb.
Already, the United States employs more people in solar energy (nearly 374,000) than in coal (a little over 160,000), according to the U.S. Department of Energy.
Despite decades of research, critical knowledge gaps remain that prevent scientists from being able to predict and track solar storms with the precision necessary to avoid low-probability, high-cost damage to technology.
Other scientists look at market forces and see the United States still cutting emissions because the nation is already shifting toward cleaner fuels such as cheaper natural gas, solar and wind.
A NASA spacecraft will aim straight for the sun next year and bear the name of the astrophysicist who predicted the existence of the solar wind nearly 60 years ago.
The multiplexer-demultiplexer (MDM) is one of two redundant data relay boxes used to control the solar array systems, radiators, cooling loops, and other hardware aboard the station.
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.
Origin and Etymology of solar
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
SOLAR Defined for English Language Learners
Definition of solar for English Language Learners
: of or relating to the sun
: produced by or using the sun's light or heat
SOLAR Defined for Kids
Definition of solar for Students
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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