plethysmogram

noun
ple·thys·mo·gram | \ple-ˈthiz-mə-ˌgram, plə-\

Definition of plethysmogram 

: a tracing made by a plethysmograph

First Known Use of plethysmogram

1894, in the meaning defined above

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The first known use of plethysmogram was in 1894

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plethysmogram

noun
ple·thys·mo·gram | \ple-ˈthiz-mə-ˌgram, plə- \

Medical Definition of plethysmogram 

: a tracing made by a plethysmograph

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