What is the meaning of the word "nacreous cloud"?
Definitions:
-
A luminous iridescent cloud that occurs at altitudes of about 85,000 feet, that may be seen when the sun is a few degrees below the horizon.
NOUN
- Looking like a portal to the next dimension or possibly a spaceship, the shimmering colors of nacreous clouds were spotted.
- Looking like a portal to the next dimension or possibly a spaceship, the shimmering colors of nacreous clouds were spotted.