Computer equipment, such as a printer, disk drive or modem. An extension of the adjective's meaning of marginal, on the periphery. Greek periphereia (circumference).
Pe*riph"er*al (?), a.
1.
Of or pertaining to a periphery; constituting a periphery; peripheric.
2. Anat.
External; away from the center; as, the peripheral portion of the nervous system.
© Webster 1913.
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