nacreous cloud
nacreous cloud · nacreous clouds
A polar stratospheric cloudA polar stratospheric cloud.
Meaning
1 sensesA polar stratospheric cloud.
More definitions
- a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon
Forms
plural: nacreous clouds| Singular | nacreous cloud |
|---|---|
| Plural | nacreous clouds |
regular
Synonyms
1 synonymsClose in meaning
- a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon:mother-of-pearl cloud