rayleigh rayful • rayleigh disk · · · Info · Definitions · Characters · · rayleigh · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) English physicist who studied the density of gases and discovered argon; made important contributions to acoustic theory (1842-1919). Synonyms: Rayleigh, Third Baron Rayleigh, Lord Rayleigh, John William Strutt. · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 y latin small letter y U+0079