Meaning of “peripheral” in the English Dictionary

"peripheral" in American English

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peripheraladjective

us /pəˈrɪf·ər·əl/

not central or of main importance:

First of all, we had to find out who the thief was – getting the money back was a peripheral issue.

Peripheral vision is what you can see to the sides of what you are looking at.

peripheralnoun [ C ]

us /pəˈrɪf·ər·əl/

a piece of equipment, such as a printer, that can be connected to a computer

(Definition of “peripheral” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"peripheral" in Business English

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peripheraladjective

uk /pəˈrɪfərəl/ us

used to describe something that is not as important as the main thing to which it is related, for example a company's less successful activities in relation to its most successful ones:

Some of the more peripheral interests have been sold and the company now has a clearer focus on certain markets.

IT used to describe a piece of equipment, such as a printer, that can be connected to a computer:

The system is expected to boost sales of PCs as well as components, applications, and peripheral devices.

peripheralnoun [ C ]

uk /pəˈrɪfərəl/ us

IT a piece of equipment, such as a printer, that can be connected to a computer:

Whether something is a peripheral or part of a computer is not always clear.

(Definition of “peripheral” from the Cambridge Business English Dictionary © Cambridge University Press)