1. On or near an edge or constituting an outer boundary; the outer area
   "Russia's peripheral provinces"; "peripheral suburbs"
    
2. Related to the key issue but not of central importance
   "peripheral issues"; "a peripheral interest"; "energy is far from a peripheral issue in the economy"

1. (computing) electronic equipment external to the circuit board that contains the CPU of a computer
   "disk drives and printers are important peripherals"; "He connected a new printer, an essential computer peripheral, to his laptop"; "disk drives and printers are important peripheral devices";
   - computer peripheral, peripheral device

Derived forms: peripherals

See also: accidental, circumferential, encircling, fringy, incidental, marginal, off-base, skirting

Type of: electronic equipment

Antonym: central

Part of: computer, computing device, computing machine, data processor, electronic computer, information processing system

Encyclopedia: Peripheral