perimeter [ p uh- rim-i-ter ] SHOW IPA / pəˈrɪm ɪ tər / PHONETIC RESPELLING WORD ORIGIN noun 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 1585–95;
-meter Related forms pe·rim·e·ter·less, adjective pe·rim·e·tral, per·i·met·ric , [per- uh- me-trik] /ˌpɛr əˈmɛ trɪk/ per·i·met·ri·cal, adjective per·i·met·ri·cal·ly, adverb pe·rim·e·try, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for perimetrical noun maths 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 Derived Forms perimetric ( ˌpɛrɪˈmɛtrɪk) or perimetrical, adjective perimetrically, adverb perimetry, noun Word Origin for perimeter
C16: from French
périmètre, from Latin perimetros; see peri-, -meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for perimetrical n.
early 15c., "line around a figure or surface," from Latin
perimetros, from Greek perimetron "circumference," from peri- "around" (see peri-) + metron "measure" (see meter (n.2)). Military sense of "boundary of a defended position" is attested from 1943.
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for perimetrical n. 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.
Science definitions for perimetrical 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
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