The term "solar" generally refers to anything related to the sun. It is commonly used in the context of solar energy, which is energy derived from the sun's radiation. Solar energy can be harnessed through various technologies such as solar panels (photovoltaic cells) to generate electricity or solar thermal systems to produce heat. Additionally, the term "solar" is often used in the context of solar power, solar radiation, solar heating, and solar technology, all of which are associated with utilizing the sun's energy for various purposes.