mother-of-pearl cloud mother-of-pearl • mother-of-thousands · · · Info · Definitions · Synonyms · Characters · · mother-of-pearl cloud · · Text Common · · Latin · · Scripts 21 · · Length 5 · · Syllables Definitions · · · (noun) a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon. Synonyms: nacreous cloud, mother-of-pearl cloud. · · Noun Definition 1 Synonyms · · · nacreous cloud · · Synonym 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075