Standard Lemma guide

quadrillion

noun · num · 5 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • US: /kwɑˈdɹɪl.i.ən/
  • US: /kwɑˈdɹɪl.jən/
  • Australian, Scotland: /kwɔˈdɹɪl.jən/
  • New-Zealand: /kwɔˈdɹɘl.jɘn/
  • General-South-African, Ireland, UK: /kwɒˈdɹɪl.jən/
  • US: Recorded audio is listed in the source snapshot.
  • Australia: Recorded audio is listed in the source snapshot.
  • rhymes with -ɪljən

1

noun

Meaning 1

Any very large number, exceeding normal description.

Definition source: English Wiktionary via Wiktextract

Usage: excessive, figuratively, slang

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

num

Meaning 2

A thousand trillion (logic: 1,000 × 1,0004): 1 followed by fifteen zeros, 1015.

Definition source: English Wiktionary via Wiktextract

Usage: Australian, British, US, modern

Qualifier: short scale

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

num

Meaning 3

A million trillion (logic: 1,000,0004): 1 followed by twenty-four zeros, 1024.

Definition source: English Wiktionary via Wiktextract

Usage: Australia, UK, dated

Qualifier: long scale

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

the number that is represented as a one followed by 15 zeros

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: large integer

5

noun

Meaning 5

the number that is represented as a one followed by 24 zeros

Definition source: Princeton WordNet 3.0

Examples

  • in England they call a septillion a quadrillion

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: large integer

History

Etymology

From French quadrillion, from quadri- (“four”) + -illion. By surface analysis, quadr- + -illion.

Across languages

Translations

64 source translations are retained for this English entry.

  • French: milliard — any very large number
  • French: milliards — any very large number
  • French: million — any very large number
  • French: millions — any very large number
  • Armenian: կվադրիլիոն (kvadrilion) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Armenian: հազար երկիլիոն (hazar erkilion) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Chinese Mandarin: 千万亿 — a thousand trillion (1,000,000,000,000,000); a billiard
  • Czech: biliarda — a thousand trillion (1,000,000,000,000,000); a billiard
  • Dutch: biljard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Esperanto: biliardo — a thousand trillion (1,000,000,000,000,000); a billiard
  • Estonian: biljard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Finnish: biljardi — a thousand trillion (1,000,000,000,000,000); a billiard
  • French: billiard — a thousand trillion (1,000,000,000,000,000); a billiard
  • French: million de milliards — a thousand trillion (1,000,000,000,000,000); a billiard
  • German: Billiarde — a thousand trillion (1,000,000,000,000,000); a billiard
  • Greek: τετρακισεκατομμύριο (tetrakisekatommýrio) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Hungarian: billiárd — a thousand trillion (1,000,000,000,000,000); a billiard
  • Hungarian: ezerbillió — a thousand trillion (1,000,000,000,000,000); a billiard
  • Japanese: 千兆 (senchō) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Kalmyk: тунмл (tunml) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Korean: 천조 (cheonjo) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Kyrgyz: санчоо (sancoo) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Kyrgyz: тунмал (tunmal) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Malay: kuadrilion — a thousand trillion (1,000,000,000,000,000); a billiard
  • Maltese: kwadriljun — a thousand trillion (1,000,000,000,000,000); a billiard
  • Maltese: biljard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Manchu: ᠮᡳᠩᡤᠠᠨ ᠰᠠᠵᠠ (minggan saja) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Mongolian: тунамал (tunamal) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Norwegian Nynorsk: biljard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Persian: کوادریلیون (kuâdrilion) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Polish: biliard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Portuguese: mil biliões — a thousand trillion (1,000,000,000,000,000); a billiard
  • Portuguese: quadrilhão — a thousand trillion (1,000,000,000,000,000); a billiard
  • Portuguese: quatrilhão — a thousand trillion (1,000,000,000,000,000); a billiard
  • Romanian: biliard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Russian: квадриллио́н (kvadrillión) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Sanskrit: अन्त्य (antya) — a thousand trillion (1,000,000,000,000,000); a billiard
  • Spanish: cuatrillón — a thousand trillion (1,000,000,000,000,000); a billiard
  • Spanish: mil billones — a thousand trillion (1,000,000,000,000,000); a billiard
  • Swedish: biljard — a thousand trillion (1,000,000,000,000,000); a billiard
  • Turkish: katrilyon — a thousand trillion (1,000,000,000,000,000); a billiard
  • Turkish: bilyar — a thousand trillion (1,000,000,000,000,000); a billiard
  • Vietnamese: triệu tỷ — a thousand trillion (1,000,000,000,000,000); a billiard
  • Welsh: mil biliwn — a thousand trillion (1,000,000,000,000,000); a billiard
  • Welsh: cwadriliwn — a thousand trillion (1,000,000,000,000,000); a billiard
  • Armenian: քառիլիոն (kʻaṙilion) — a million trillion, 1024 — see also septillion
  • Catalan: quadrilió — a million trillion, 1024 — see also septillion
  • Dutch: quadriljoen — a million trillion, 1024 — see also septillion
  • Esperanto: kvariliono — a million trillion, 1024 — see also septillion
  • Estonian: septiljon — a million trillion, 1024 — see also septillion
  • Finnish: kvadriljoona — a million trillion, 1024 — see also septillion
  • French: quadrillion — a million trillion, 1024 — see also septillion
  • German: Quadrillion — a million trillion, 1024 — see also septillion
  • Greek: επτάκις εκατομμύριο (eptákis ekatommýrio) — a million trillion, 1024 — see also septillion
  • Japanese: 一秭 (isshi) — a million trillion, 1024 — see also septillion
  • Manchu: ᡩᡠᠩᡧᡠᠨ (dungšun) — a million trillion, 1024 — see also septillion
  • Polish: kwadrylion — a million trillion, 1024 — see also septillion
  • Portuguese: quadrilião m quatrilião — a million trillion, 1024 — see also septillion
  • Portuguese: septilhão — a million trillion, 1024 — see also septillion
  • Romanian: cvadrilion — a million trillion, 1024 — see also septillion
  • Russian: септиллио́н (septillión) — a million trillion, 1024 — see also septillion
  • Spanish: cuatrillón — a million trillion, 1024 — see also septillion
  • Swedish: kvadriljon — a million trillion, 1024 — see also septillion
  • Vietnamese: triệu tỷ tỷ — a million trillion, 1024 — see also septillion