I. pəˈriməd.ə(r) noun
( -s )
Usage: often attributive
Etymology: French périmètre, from Latin perimetros, from Greek, from peri- + metron measure — more at measure
1.
a.
(1) : the boundary of a closed plane figure
the perimeter of a circle
(2) : the measure of the boundary of a closed plane figure ; specifically : the sum of the lengths of the line segments forming a polygon
b. : a line or strip bounding or protecting an area
small cities on the perimeter of the reservation — Zdenek Salzmann
digging in behind a barbed-wire perimeter with antitank guns — Barrett McGurn
the perimeter of a shopping district
c. : outer limits
criticism which attempts to bring to literature insights found outside its perimeter — C.W.Shumaker
the perimeter of possible excursions was reduced — André Maurois
House of Representatives report described the perimeter of the legislation — U.S. Code
2.
a. : an instrument for examining the discriminative powers of different parts of the retina often consisting of an adjustable semicircular arm with a fixation point for the eye and variable stations for the visual stimuli
b. : a similar instrument used in studying auditory space perception
• peri·met·ric |perə|me.trik or peri·met·ri·cal -.trə̇kəl adjective
• peri·met·ri·cal·ly -.trə̇k(ə)lē adverb
• pe·rim·e·try pəˈrimə.trē noun -es
II. adjective
Etymology: perimeter , noun
: scoring mostly from the perimeter in basketball
perimeter players
also : originating from or centered on the perimeter in basketball
perimeter shots
a perimeter game
III. noun
: the part of a basketball court outside the three-point line