Word Pronunciation & Dictionary

quadrillion

/kwɑˈdɹɪl.i.ən/

Word Rarity Very rare

Frequency: Zipf frequency 2.10 in modern English

Syllables
quadrillion
IPA
/kwɑˈdɹɪl.i.ən/
21
Scrabble Score
11
Letters
1
Syllables
9
Unique Chars

Meaning

num

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

American usage

num

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

Australian usage; British usage; Dated

Example Sentences

Etymology

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

Regional Pronunciation

  • American English: /kwɑˈdɹɪl.i.ən/
  • British English: /kwɒˈdɹɪl.jən/

Usage

Inflected Forms

Derived Forms

Phrases

peta- yotta- Previous: trillion. Next: quintillion. Previous: trilliard. Next: quadrilliard.

Frequently Paired Words

peta- yotta- Previous: trillion. Next: quintillion. Previous: trilliard. Next: quadrilliard. thousand million milliard thousand million

Synonyms

Rhymes With

Questions

How do you pronounce quadrillion?
The recorded pronunciation is /kwɑˈdɹɪl.i.ən/.
What does quadrillion mean?
A thousand trillion (logic: 1,000 × 1,000⁴): 1 followed by fifteen zeros, 10¹⁵.
Where does quadrillion come from?
From French quadrillion, from quadri- (“four”) + -illion. By surface analysis, quadr- + -illion.

How to pronounce quadrillion

  1. Open the pronunciation page — Open the Speakur entry for “quadrillion”.
  2. Read the phonetic spelling — Read the IPA spelling (/kwɑˈdɹɪl.i.ən/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “quadrillion”.
  4. Repeat and practice — Say “quadrillion” aloud, matching stress and vowels until it feels natural.