planimeter

noun
pla·​nim·​e·​ter | \ plā-ˈni-mə-tər How to pronounce planimeter (audio) , plə-\

Definition of planimeter

: an instrument for measuring the area of a plane figure by tracing its boundary line

First Known Use of planimeter

circa 1858, in the meaning defined above

History and Etymology for planimeter

French planimètre, from Latin planum plane + French -mètre -meter

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More Definitions for planimeter

planimeter

noun
pla·​nim·​e·​ter | \ plā-ˈnim-ət-ər, plə- How to pronounce planimeter (audio) \

Medical Definition of planimeter

: an instrument for measuring the area of a plane figure by tracing its boundary line