[ puh-rim-i-ter ]
/ pəˈrɪm ɪ tər /
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
Related formspe·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
Can be confusedparameter perimeter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for perimetry
/ (pəˈrɪmɪtə) /
- 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 Formsperimetric (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
Medicine definitions for perimetry (1 of 2)
[ pə-rĭm′ĭ-trē ]
The determination of the limits of the visual field.
Medicine definitions for perimetry (2 of 2)
[ pə-rĭm′ĭ-tər ]
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 perimetry
[ pə-rĭm′ĭ-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.