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

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

These demonstrations confirm that the solar modules can function under real-world driving conditions on both passenger and commercial vehicles. —Neetika Walter, Interesting Engineering, 9 Jan. 2026

Why has Hochul stalled on the Propel transmission line from upstate to NYC, deterring solar providers from making investments in this cheap, clean fuel? —Voice Of The People, New York Daily News, 9 Jan. 2026

The 2027 eclipse is also another chance to experience the wondrous solar phenomenon from the water, with cruise operators like Holland America Line planning to anchor off the coast of North Africa for the occasion. —Lydia Price, Travel + Leisure, 9 Jan. 2026

Most utilities in the state have plans in place to retire their coal-burning plants and to transition to cleaner power sources such as solar, wind, batteries and natural gas. —Noelle Phillips, Denver Post, 9 Jan. 2026

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

Phrases Containing solar

• mean solar day
• solar battery
• solar cell
• solar collector
• solar constant
• solar day
• solar eclipse
• solar farm
• solar flare
• solar mass
• solar panel
• solar park
• solar plexus
• solar pond
• solar sail
• solar system
• solar wind

Rhymes for solar

• bowler
• choler
• dolor
• molar
• polar
• roller
• soler
• stroller
• troller
• volar
• ambipolar
• areolar

Kids 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

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