PLETHYSMOGRAPH Meaning of PLETHYSMOGRAPH in English plethysmograph BrE AmE plə ˈθɪz mə ʊ ɡrɑːf plɪ-, ple-, -ˈθɪs-, -ɡræf AmE \ -ə ɡræf▷ plethysmograph|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012