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perimeter

[ puh-rim-i-ter ]
/ pəˈrɪm ɪ tər /
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See synonyms for: perimeter / perimetric on Thesaurus.com

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.
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Origin of perimeter

1585–95; <French périmètre<Latin perimetros (feminine) <Greek perímetron (neuter). See peri-, -meter

OTHER WORDS FROM perimeter

pe·rim·e·ter·less, adjectivepe·rim·e·tral, per·i·met·ric [per-uh-me-trik], /ˌpɛr əˈmɛ trɪk/, per·i·met·ri·cal, adjectiveper·i·met·ri·cal·ly, adverbpe·rim·e·try, noun

WORDS THAT MAY BE CONFUSED WITH perimeter

parameter, perimeter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for perimeter

perimeter
/ (pəˈrɪmɪtə) /

noun
maths
  1. the curve or line enclosing a plane area
  2. the length of this curve or line
  1. any boundary around something, such as a field
  2. (as modifier)a perimeter fence; a perimeter patrol
a medical instrument for measuring the limits of the field of vision

Derived forms of perimeter

perimetric (ˌpɛrɪˈmɛtrɪk) or perimetrical, adjectiveperimetrically, adverbperimetry, noun

Word Origin for perimeter

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

Scientific definitions for perimeter

perimeter
[ pə-rĭmĭ-tər ]

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.
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