n. One quadrillion (1,000,000,000,000,000) bytes. SI symbol: PB.
n. 1,125,899,906,842,624 bytes or 10245, or 250. This capacity may be expressed unambiguously as a pebibyte. SI symbol: PiB, computing symbol: PB.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a unit of information equal to 1000 terabytes or 10^15 bytes
n. a unit of information equal to 1024 tebibytes or 2^50 bytes
Word Usage
"The Internet Archive has just installed its first Petabox, "a machine designed to safely store and process one petabyte of information (a petabyte is a million gigabytes).""