lord rayleigh lord privy seal • lords-and-ladies · · · Info · Definitions · Characters · · lord rayleigh · · Text Common · · Latin · · Scripts 13 · · Length 4 · · 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 · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 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 o latin small letter o U+006F r latin small letter r U+0072 y latin small letter y U+0079