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diagrammeter

noun
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di·​a·​gram·​me·​ter | \ ˈdīəˌgramˌmētə(r) \
plural -s

Definition of diagrammeter

: an instrument for measuring diagrams especially : one for measuring the ordinates of indicator diagrams

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History and Etymology for diagrammeter

diagram + -meter

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“Diagrammeter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagrammeter. Accessed 24 Oct. 2020.

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