This is the 14560th most frequent German word.
leuchtende
"Leuchtende" means "shining" or "bright" in English.
"Leuchtenden" here is an adjective describing "Farben" (colors), indicating that the colors are vivid and bright.
Die leuchtenden Farben des Bildes zogen die Aufmerksamkeit auf sich.
The bright colors of the painting drew attention.
Here, "leuchtende" is used as an adjective describing "Sonne" (sun), indicating that the sun emits bright light.
Die leuchtende Sonne ging langsam unter.
The radiant sun set slowly.
In this sentence, "leuchtende" modifies "Idee" (idea), metaphorically describing the idea as brilliant or inspiring.