WordrevontuletMeaningnorthern lightsPart of speechnounPronunciationCourseFinnishLessonExplaining reasons (nimittäin)Usages of revontuletRevontulet hohtavat vihreinä taivaalla.The northern lights glow green in the sky.Kuvaamme usein taivasta. Revontulet ovat nimittäin upeita.We often film the sky. The northern lights are wonderful, you see.