optical crown optical condenser • optical crown glass · · · Info · Definitions · Synonyms · Characters · · optical crown · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) optical glass of low dispersion and low refractive index. Synonyms: optical crown, crown glass, optical crown glass. · · Noun Definition 1 Synonyms · · · crown glass · · Synonym 1 optical crown glass · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E 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 w latin small letter w U+0077