plethysmograph plethory • plethysmographic · · · Info · Definitions · Characters · · plethysmograph · · Text Latin · · Script 14 · · Length 4 · · Syllables Definitions · · · (noun) a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains). · · 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 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 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079