noun
sunlight; solar rays
Refers to the light and rays emitted by the sun, often with a slightly scientific or descriptive tone.
太陽光線が部屋の中に差し込んでいる。
Sunlight is streaming into the room.
強い太陽光線から肌を守るために日焼け止めを塗る。
I apply sunscreen to protect my skin from strong solar rays.
Compound of 太陽 (sun) + 光線 (light rays, beam).