| 释义 |
pe·rim·e·ter
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
< perimeterplayers >
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 |