noun Descargar 🔗Compartir Rilla, surco A long, narrow depression that resembles a channel, found on the surface of various lunar and planetary bodies. Examples : "The astronaut pointed out a prominent rille snaking across the lunar landscape. " El astronauta señaló una rilla prominente que serpenteaba por el paisaje lunar. astronomy geology space Chat con IAJuego de vocabularioPracticar lectura