iluminar
/ilumiˈnaɾ/ · B2 · verb
to illuminate
💡 iluminar = in + lumen (Latin light), the source of English illuminate
From Latin illuminare: il- (into) + lumen (light), so the word means to put light into something. Lumen is still the unit of light on bulb boxes, and it gives us luminous too. Spanish drops one L: iluminar.