Definition of PERIPHERAL (original) (raw)
1
: of, relating to, involving, or forming a periphery or surface part
2
a
: of, relating to, affecting, or being part of the peripheral nervous system
b
: of, relating to, or being blood in the systemic circulation
3
: of, relating to, or being the outer part of the field of vision
: a device connected to a computer to provide communication (such as input and output) or auxiliary functions (such as additional storage)
Did you know?
Your peripheral vision is the outer area of your field of vision, where you can still detect movement and shapes. It can be very valuable when, for instance, you're driving into Chicago at rush hour, especially when switching lanes. When people call an issue in a discussion peripheral, they mean that it's not of primary importance, and they're probably suggesting that everyone get back to the main topic. Peripheral is now also a noun: computer peripherals are the added components—printers, webcams, microphones, etc.—that increase a computer's capacities.
Synonyms
Examples of peripheral in a Sentence
Adjective
If we focus too much on peripheral issues, we will lose sight of the goal. peripheral devices such as modems and scanners He saw in his peripheral vision that a car was trying to pass him.
Recent Examples on the Web
Temporary electrode catheters are inserted through the peripheral veins into the heart. —
Carisa Brewster, Verywell Health, 12 Sep. 2024 The tanker filled the P-8’s cockpit windows—four huge jet engines, spanning my peripheral vision. —Ben Taub, The New Yorker, 9 Sep. 2024
For the first time in years, new innovations in the world of PC peripherals such as keyboards and mice have given some players a genuine advantage, and have been so strong that they have been outlawed by some competitions. —Mike Stubbs, Forbes, 13 Sep. 2024 Eligible shoppers can also save 15 percent on peripherals and 5 percent on Razer gaming chairs. —Louryn Strampe, WIRED, 14 Aug. 2024 See all Example Sentences for peripheral 
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'peripheral.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
Adjective
1808, in the meaning defined at sense 1
Noun
1966, in the meaning defined above
Time Traveler
The first known use of peripheral was in 1808
Dictionary Entries Near peripheral
Cite this Entry
“Peripheral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peripheral. Accessed 1 Oct. 2024.
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Last Updated: 16 Sep 2024 - Updated example sentences
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