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

Reliance’s activities span hydrocarbon exploration and production, petroleum refining and marketing, petrochemicals, advanced materials and composites, renewables (solar and hydrogen), retail, digital services and media and entertainment. —Time Pr, Time, 24 Apr. 2026

Complex patterns, colors with different effects, and even multilayered designs can be applied directly onto solar modules. —Abhimanyu Ghoshal, New Atlas, 24 Apr. 2026

Batteries are a linchpin for unlocking solar and wind energy’s full potential by soaking up excess green energy and then discharging it when the wind isn’t blowing or the sun isn’t shining. —Mark Chediak, Fortune, 24 Apr. 2026

Eco effort The off-grid camp is fully powered by solar energy, with panels for each tent used to heat water supplied from a tank. —Condé Nast, Condé Nast Traveler, 24 Apr. 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