Peripheral
来自Big Physics
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late 16th century (denoting a line that forms the boundary of something): via late Latin from Greek periphereia ‘circumference’, from peripherēs ‘revolving around’, from peri- ‘around’ + pherein ‘to bear’.
wiktionary
From peripher(y) + -al.
etymonline
peripheral (adj.)
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.
