n. (context computing English) One sextillion (1021) bytes. SI symbol: ZB.
The zettabyte is a multiple of the unit byte for digital information. The prefix zetta indicates multiplication by the seventh power of 1000 or 10 in the International System of Units (SI). A zettabyte is one sextillion (one long scale trilliard) bytes. The unit symbol is ZB.1 ZB = = = = = = = .
A related unit, the zebibyte (ZiB), using a binary prefix, is equal to .