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Definition of: planimeter
(plə·nim′ə·tər) noun
An instrument for measuring the area of any plane surface, however irregular, by moving a pointer around its boundary and reading the indications of a scale. [<F planimètre]
—pla·ni·met·ric (plā′nə·met′rik, plan′ə-) or ·ri·cal adjective
—pla·nim′e·try noun
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