- the border or outer boundary of a two-dimensional figure.
- the length of such a boundary.
- a line bounding or marking off an area.
- the outermost limits.
- Military. a fortified boundary that protects a troop position.
- Ophthalmology. an instrument for determining the peripheral field of vision.
Origin of perimeter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the curve or line enclosing a plane area
- the length of this curve or line
- any boundary around something, such as a field
- (as modifier)a perimeter fence; a perimeter patrol
- a medical instrument for measuring the limits of the field of vision
C16: from French périmètre, from Latin perimetros; see peri-, -meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for perimetrical
Online Etymology Dictionary, © 2010 Douglas Harper
- The outer limits of an area; circumference.
- An instrument used to measure field of vision.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The sum of the lengths of the segments that form the sides of a polygon.
- The total length of any closed curve, such as the circumference of a circle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.