co·ro·na1/kəˈrōnə/noun 1.ASTRONOMY the rarefied gaseous envelope of the sun and other stars. The sun's corona is normally visible only during a total solar eclipse, when it is seen as an irregularly shaped pearly glow surrounding the darkened disk of the moon. I spend much of my time in my neighbourhood. When I'm not writing in … Continue reading Coronavirus: Pearly glow? Or darkened disk?