Standard Lemma guide

petabyte

noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˈpɛtəbaɪt/
  • US: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

One quadrillion (1015, or 1,000,000,000,000,000) bytes or 1,000 terabytes.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A pebibyte.

Definition source: English Wiktionary via Wiktextract

Usage: informal

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a unit of information equal to 1024 tebibytes or 2^50 bytes

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: pebibyte, PB, PiB

Antonyms: none provided

Broader terms: computer memory unit

4

noun

Meaning 4

a unit of information equal to 1000 terabytes or 10^15 bytes

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: PB

Antonyms: none provided

Broader terms: computer memory unit

History

Etymology

Etymology tree English peta- Proto-Indo-European *bheyd- Proto-Indo-European *bhéydt Proto-Germanic *bītaną Proto-West Germanic *bītan Old English bītan Middle English biten English bite English byte English petabyte From peta- + byte.

Across languages

Translations

25 source translations are retained for this English entry.

  • Arabic: بِيتَابَايْت (bitabayt) — 1,000,000,000,000,000 bytes
  • Chinese Mandarin: 拍它字節 /拍它字节 (pāitāzìjié) — 1,000,000,000,000,000 bytes
  • Chinese Mandarin: 拍字節 /拍字节 (pāizìjié) — 1,000,000,000,000,000 bytes
  • Chinese Mandarin: PB — 1,000,000,000,000,000 bytes
  • Czech: petabyte — 1,000,000,000,000,000 bytes
  • Czech: petabajt — 1,000,000,000,000,000 bytes
  • Esperanto: petabajto — 1,000,000,000,000,000 bytes
  • Esperanto: petabitoko — 1,000,000,000,000,000 bytes
  • Finnish: petatavu — 1,000,000,000,000,000 bytes
  • French: pétaoctet — 1,000,000,000,000,000 bytes
  • Georgian: პეტაბაიტი (ṗeṭabaiṭi) — 1,000,000,000,000,000 bytes
  • German: Petabyte — 1,000,000,000,000,000 bytes
  • Greek: πεταμπάιτ (petampáit) — 1,000,000,000,000,000 bytes
  • Greek: πεταδυφιοσυλλαβή (petadyfiosyllaví) — 1,000,000,000,000,000 bytes
  • Hungarian: petabyte — 1,000,000,000,000,000 bytes
  • Japanese: ペタバイト (petabaito) — 1,000,000,000,000,000 bytes
  • Korean: 페타바이트 (petabaiteu) — 1,000,000,000,000,000 bytes
  • Macedonian: петабајт (petabajt) — 1,000,000,000,000,000 bytes
  • Malay: petabait — 1,000,000,000,000,000 bytes
  • Navajo: są́ą́łtsohʼííłké — 1,000,000,000,000,000 bytes
  • Polish: petabajt — 1,000,000,000,000,000 bytes
  • Portuguese: petabyte — 1,000,000,000,000,000 bytes
  • Russian: петаба́йт (petabájt) — 1,000,000,000,000,000 bytes
  • Thai: เพตะไบต์ — 1,000,000,000,000,000 bytes
  • Uyghur: پېتابايت (pëtabayt) — 1,000,000,000,000,000 bytes