Definitions

1. noun

A rare atmospheric optical phenomenon in which a bright, diffuse spot or patch of light appears in the sky, caused by the diffraction of sunlight by water droplets in the air, similar to a moon halo but without the ring.

“During the storm, a parselene appeared in the sky, illuminating the dark clouds.”

2. noun

A bright patch or spot of light in the sky, caused by the diffraction of sunlight by water droplets in the air.

“The parselene in the sky was so bright that it made it difficult to see the stars.”