We found 3 dictionaries that define the word mother-of-pearl clouds:

General (1 matching dictionary)

1. mother-of-pearl clouds: Merriam-Webster

Computing (1 matching dictionary)

2. mother-of-pearl clouds: Encyclopedia

Tech (1 matching dictionary)

3. Glossary of Meteorology (No longer online)

(Note: See mother-of-pearl_cloud as well.)

Definitions from Wiktionary (mother-of-pearl cloud) ▸ noun:  (meteorology) A rare kind of high-altitude cloud having a nacreous appearance. ▸ Also see mother-of-pearl_cloud ▸ Words similar to mother-of-pearl clouds ▸ Usage examples for mother-of-pearl clouds ▸ Idioms related to mother-of-pearl clouds ▸ Wikipedia articles (New!) ▸ Words that often appear near mother-of-pearl clouds ▸ Rhymes of mother-of-pearl clouds ▸ Invented words related to mother-of-pearl clouds