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

After years on the periphery of French politics, his fortunes changed in 1977 when he was bequeathed a mansion outside Paris by a millionaire backer, along with 30 million francs, around 5 million euros ($5.2 million) in today's money. —Elizabeth Pineau and Marine Strauss, USA TODAY, 8 Jan. 2025

After years on the periphery of French politics, his fortunes changed in 1977 when he was bequeathed a mansion outside Paris by a millionaire backer, along with 30 million francs, around $5.2 million in today's money. —Fox News, 7 Jan. 2025

Until a few weeks ago, HTS controlled two-thirds of a province on Syria’s rural periphery. —Sam Heller, Foreign Affairs, 16 Dec. 2024

After appearing to be losing control of the country to the rebels, the Aleppo battle secured Assad’s hold on strategic areas of Syria, with opposition factions and their foreign backers controlling areas on the periphery. —Kareem Chehayeb, Los Angeles Times, 1 Dec. 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