• (a.) Of or pertaining to a nucleus; situated around a nucleus; as, the perinuclear protoplasm.
Per`i·nu'cle·ar adjective (Biol.) Of or pertaining to a nucleus; situated around a nucleus; as, the perinuclear protoplasm. 
Type: Term Pronunciation: per′i-nū′klē-ăr Definitions: 1. Surrounding a nucleus. Synonyms: circumnuclear
perinuclear Near or around a nucleus.