From Longman Dictionary of Contemporary Englishsolarso‧lar /ˈsəʊlə $ ˈsoʊlər/ ●●○ adjective [only before noun] 1 HArelating to the sun → lunar a solar eclipse2 TPWusing the power of the sun’s light and heat solar energy
Examples from the Corpus
solar• Girl, light the torches in the solar!• An increase in the number of dark spots on the sun marks such a period of high solar activity.• Guy took two steps away from the solar door and had to stop.• Furthermore, Conservation moves are very effective in this sector and solar energy is very suitable for water heating needs.• At times of strong solar heating there may be many active dust devils at the same time.• a solar observatory• The first solar panels were developed by Bell Laboratories in 1954 as part of the space program.• But because ultraviolet radiation is a constant feature of solar radiation, the ozone layer is maintained.• There are many missions that only solar sails can do.Origin solar (1400-1500) Latin solaris, from sol “sun” 