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

Observers will need to wear solar eclipse glasses, and cameras, telescopes and binoculars must have solar filters placed in front of their lenses at all other times. — Daisy Dobrijevic, Space.com, 10 Aug. 2026

According to the site, the project is intended to produce AI chips at scale, supporting a vision that includes as many as 1 million Tesla Optimus robots, 10 million tons of mass launched into orbit annually, and more than 1 terawatt of solar power. — Joshua Hong, Fortune, 10 Aug. 2026

Nagqu receives more than 2,800 hours of sunshine each year, giving the project a strong solar resource despite its challenging location. — Sujita Sinha, Interesting Engineering, 10 Aug. 2026

Less solar radiation and reduced temperatures can also affect wind, cloud cover and humidity. — Mary Gilbert, CNN Money, 10 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