Peripheral | Mean of peripheral in English Dictionary

/pəˈrɪfərəl/

• not relating to the main or most important part
1. If we focus too much on peripheral issues, we will lose sight of the goal.
2. His role in the negotiations was peripheral to the outcome. [=his role in the negotiations was not important in deciding the outcome]
• connected to a computer but not an essential part of it
1. peripheral devices/equipment such as modems and scanners
• of or relating to the area that is to the side of the area you are looking at
1. He saw in his peripheral vision that a car was trying to pass him.

• of or relating to the part of the nervous system that is separate from the brain and spinal cord
1. peripheral nerves
2. the peripheral nervous system
• Noun
• a piece of equipment (such as a printer, speaker, etc.) that is connected to a computer but is not an essential part of it
1. computer peripherals