solar
B2Pronunciation
UK
- /sˈəʊlə/
US
- /ˈsoʊlər/
Description
- relating to the sun
- powered by sunlight
- of or from the sun
The word "solar" points back to the Sun. It is used for things connected to the Sun, its light, or its energy. We talk about solar panels that turn sunlight into electricity, solar flares that burst from the Sun's surface, and the Solar System, our family of planets moving around the Sun. It is a bright, practical word linked to light, heat, and power.
The term "solar" comes directly from the Latin word sol, meaning sun. And just like the Sun is central to our existence, so too is "solar" central to anything related to it.
Most commonly today, you'll hear "solar" in connection with renewable energy. Solar power uses photovoltaic cells to capture sunlight and convert it into electricity—a clean and sustainable alternative to fossil fuels. You might see solar farms, vast fields covered in these panels, or solar-powered devices like calculators and garden lights.
But "solar" isn't limited to energy. It also describes anything that comes from the Sun or is linked to it. Astronomers study solar wind—streams of charged particles sent out by the Sun. Scientists also track solar activity, like sunspots and flares, which can affect technology and conditions on Earth. And of course, we live in the Solar System, a collection of planets, moons, asteroids, and comets all bound to the Sun's gravity.
Even historically, "solar" has been used in calendars (like the solar calendar based on the Earth's orbit around the Sun) and mythology—many ancient cultures worshipped the Sun as a deity.
So, whether it's powering your home, influencing space weather, or defining our planetary neighborhood, "solar" is a word that shines brightly with its connection to the life-giving energy of our Sun.
Examples
- 1
Home energy
They put solar panels on the roof to cut their electricity bill.
- 2
Backup power
The clinic uses solar power when the main grid goes down.
- 3
Hiking gear
We packed a solar charger so we could keep our phones on during the hike.
- 4
Garden lights
Many garden lights are solar-powered, so they turn on automatically at night.
- 5
Eclipse
Millions of people watched the solar eclipse online.
- 6
Astronomy basics
Children learn the names of the planets in our solar system.
Forms and spellings
1 form open this card.
Main spelling
- solaradjective