perimeter Hear it!

perimeter definition

pe·rim·eter (pə rim′ə tər)

noun

  1. the outer boundary of a figure or area
  2. the total length of this
  3. an optical instrument for testing the scope of vision and the visual powers of various parts of the retina
  4. Mil. a boundary strip where defenses are set up

Etymology: L perimetros < Gr < peri-, around + metron, measure

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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