Main entry: peripheral
Definition: on or near an edge or constituting an outer boundary; the outer area
Usage: Russia's peripheral provinces; peripheral suburbs
Antonyms: central
Definition: in or near a center or constituting a center; the inner area
Main entry: peripheral
Definition: related to the key issue but not of central importance
Usage: a peripheral interest; energy is far from a peripheral issue in the economy; peripheral issues
Antonyms: basic
Definition: pertaining to or constituting a base or basis