periphery

noun

pe·​riph·​ery pə-ˈri-f(ə-)rē 

plural peripheries

1

: the perimeter of a circle or other closed curve

also : the perimeter of a polygon

2

: the external boundary or surface of a body

3

a

: the outward bounds of something as distinguished from its internal regions or center : confines

b

: an area lying beyond the strict limits of a thing

Synonyms

• border
• borderline
• bound
• boundary
• brim
• circumference
• compass
• confines
• edge
• edging
• end
• frame
• fringe
• hem
• margin
• perimeter
• rim
• skirt
• skirting
• verge

Examples of periphery in a Sentence

the dogs are confined by an invisible electronic fence that runs along the periphery of the yard

Recent Examples on the Web

The victory helped Assad to secure his hold on strategic areas of Syria, with opposition factions and their foreign backers controlling areas on the periphery. —Charlene Gubash, NBC News, 1 Dec. 2024

Since the Boston Bruins’ tone-setting 6-4 loss on opening night to the Florida Panthers, general manager Don Sweeney has tinkered with his roster’s periphery. —Fluto Shinzawa, The Athletic, 21 Nov. 2024

Here’s how to watch every Spider-Man universe movie in order, even the ones where Peter Parker only exists around the periphery. —Declan Gallagher, EW.com, 30 Oct. 2024

In Israel, more than 75,000 people fled homes on Gaza’s periphery. —Laura King, Los Angeles Times, 6 Oct. 2024

Word History

Etymology

Middle French peripherie, from Late Latin peripheria, from Greek periphereia, from peripherein to carry around, from peri- + pherein to carry — more at bear

First Known Use

circa 1568, in the meaning defined at sense 1

Kids Definition

periphery

noun

pe·​riph·​ery pə-ˈrif-(ə-)rē 

plural peripheries

1

: the boundary or surface of a body or figure

2

: the outer or outermost part

Medical Definition

periphery

noun

pe·​riph·​ery pə-ˈrif-(ə-)rē 

plural peripheries

1

: the outward bounds of something as distinguished from its internal regions or center

2

: the regions (as the sense organs, the muscles, or the viscera) in which nerves terminate