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

More broadly, this work highlights a promising pathway for integrating solar energy directly into electrochemical energy storage, potentially bridging the gap between renewable energy harvesting and efficient energy utilization, according to researchers. —Prabhat Ranjan Mishra, Interesting Engineering, 6 Feb. 2026

Wright lambasted wind and solar power, which can be added to the grid relatively quickly, saying the renewable alternatives fail to add anything meaningful to the total capacity of the electricity grid. —Callie Patteson, The Washington Examiner, 6 Feb. 2026

Musk said getting all that AI and solar capacity in space will require about 10,000 launches a year—or a launch in less than an hour every day. —Jason Ma, Fortune, 6 Feb. 2026

Some of those data centers would operate entirely on their own power grid, utilizing solar and batteries. —Reed Albergotti, semafor.com, 6 Feb. 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