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Definition of: perimeter
(pə·rim′ə·tər) noun
1. The bounding line of any figure of two dimensions.
2. The sum of the sides of a plane figure.
3. An instrument for testing the scope of the field of vision. [<L perimetros <Gk. <peri- around + metron a measure]
—per·i·met·ric (per′ə·met′rik) or ·ri·cal adjective
—per′i·met′ri·cal·ly adverb
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