English

exabyte

From exa- + byte.

A compound of exa- + byte

Proto-Indo-European *swéḱs ‘six’

Proto-Hellenic *hwéks ‘six’

Ancient Greek ἕξ ‘six’

English exa-

Today it means

noun One quintillion (10¹⁸, or 1,000,000,000,000,000,000) bytes or 1,000 petabytes.

Language periods are conventional ranges, not dates for this word.