Petabyte
//ˈpɛtəbaɪt// noun, slang
noun, slang ·Moderate ·College level
Definitions
Noun
- 1 One quadrillion (10¹⁵, or 1,000,000,000,000,000) bytes or 1,000 terabytes.
- 2 a unit of information equal to 1024 tebibytes or 2^50 bytes wordnet
- 3 A pebibyte. informal
"As we moved along that progression, we went from the folder analogy to the file cabinet analogy to the library analogy to — well, at petabytes we ran out of organizational analogies."
- 4 a unit of information equal to 1000 terabytes or 10^15 bytes wordnet
Example
More examples"As we moved along that progression, we went from the folder analogy to the file cabinet analogy to the library analogy to — well, at petabytes we ran out of organizational analogies."
Etymology
From peta- + byte.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.