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

In the future, Doral Hydrogen is also looking to replicate this off-grid model across its 1 GW global portfolio by proving that H2Pro’s hardware can handle the flicker of solar power without breaking. —Mrigakshi Dixit, Interesting Engineering, 12 Mar. 2026

Around the Milky Way are solar twins, stars that physically appear very similar to the sun. —Charles Q. Choi, Space.com, 12 Mar. 2026

Still, solar remained the largest source of new electricity added to the grid, kept alive by its appealing economics and a rising urgency to meet demand from energy-hungry data centers. —Natasha Bracken, semafor.com, 12 Mar. 2026

But Taniguchi says his team addressed this bias, finding no strong effect of age on the distribution of orbital shape in solar twins. —Jacek Krywko, Scientific American, 12 Mar. 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