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

Silver is now in its fifth straight year of structural deficit, squeezed by solar, electric vehicles, and the hardware powering AI. — Rob Kaplan, Forbes.com, 18 Aug. 2026

Becerra envisions, for example, that a family of four earning less than $82,500 annually would get two hours of free electricity mid-day when regional demand is low and solar is generating lots of unused energy. — Los Angeles Times, 17 Aug. 2026

One of these black holes has a huge mass of 80 million times the mass of our sun, while its companion is a relative pipsqueak at 600,000 solar masses. — Keith Cooper, Space.com, 17 Aug. 2026

Florida’s Manatee Solar Energy Center pairs 75 MW of solar with a massive 409 MW of battery storage. — Mrigakshi Dixit, Interesting Engineering, 17 Aug. 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
• dolor
• molar
• polar
• roller
• soler
• stroller
• troller
• volar
• ambipolar
• areolar
• bronchiolar

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