peripheral
🇺🇸
/pəˈrɪfərəl/
🇬🇧
/pəˈrɪfərəl/
not very important compared to the main purpose or feature
In our meetings, we only discuss peripheral issues briefly.
related to the outer parts or edge of an area
She's aware of people entering her peripheral vision.
related to devices connected to a computer
He just bought a new keyboard as a peripheral for his computer.
an external device connected to a computer
The computer system's peripherals include a printer and scanner.