rayleigh disk rayleigh • rayless · · · Info · Definitions · Characters · · rayleigh disk · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) an acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity. Synonyms: Rayleigh disk. · · 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 k latin small letter k U+006B l latin small letter l U+006C r latin small letter r U+0072 s latin small letter s U+0073 y latin small letter y U+0079