Meaning

noun (computer science) electronic equipment connected by cable to the CPU of a computer

adjective on or near an edge or constituting an outer boundary; the outer area

adjective related to the key issue but not of central importance

originEtymology tree Proto-Indo-European *per-der. Ancient Greek περί (perí) Ancient Greek περῐ- (perĭ-) Proto-Indo-European *bʰer- Proto-Indo-European *bʰéreti Proto-Hellenic *pʰérō Ancient Greek φέρω (phérō) Ancient Greek περιφέρω (periphérō) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ής (-ḗs) Ancient Greek περιφερής (peripherḗs) Proto-Indo-European *-is…

Etymology from Wiktionary, CC BY-SA 3.0