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Origin and history of periphery

periphery(n.)

late 14c., periferie, "atmosphere around the earth," from Old French periferie (Modern French périphérie) and directly from Medieval Latin periferia, from Late Latin peripheria, from Greek peripheria "circumference, outer surface, line round a circular body," literally "a carrying around," from peripheres "rounded, moving round, revolving," peripherein "carry or move round," from peri "round about" (see peri-) + pherein "to carry," from PIE root *bher- (1) "to carry."

In geometry, the meaning "outside boundary of a closed figure," especially the circumference of a circle, is attested in English from 1570s; the general sense of "boundary, surface" is from 1660s.

Entries linking to periphery

"line that bounds a circle" (loosely, "any boundary line"), late 14c., from Latin circumferentia, neuter plural of circumferens, present participle of circumferre "to lead around, take around, carry around," from circum "around" (see circum-) + ferre "to carry," from PIE root *bher- (1) "to carry," also "to bear children." A loan-translation of Greek periphereia "periphery, the line round a circular body," literally "a carrying round" (see periphery). Related: Circumferential.

1803, "of, belonging to, or situated on the periphery," from periphery + -al (1). Earlier formations were peripherial (1670s); peripherical (1690s). Related: Peripherally. As a noun, peripherals, "peripheral devices of a computer," is by 1966.

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