Definition of trillion in English:


Line breaks: tril|lion
Pronunciation: /ˈtrɪljən

number (plural trillions or (with numeral or quantifying word) same)

  • 1A million million (1,000,000,000,000 or 1012).
    More example sentences
    • Scientists tell us that just after the ‘big bang’ the temperature was 100 million trillion trillion degrees.
    • There are now more than 200 million vehicles traveling 5 trillion miles per year in the United States alone.
    • Estimates for the total cost of reunification range from hundreds of billion to a few trillion dollars.
  • 1.1 (trillions) • informal A very large number or amount: the yammering of trillions of voices
    More example sentences
    • All this ridiculous wealth: trillions and zillions of it in less than a cubic mile of the City.
    • The amount is a joke compared to the trillions lost by investors and the billions in fees that the brokerages earned.
    • You can't get a hundred per cent guarantees and you can't spend trillions of dollars trying to guard a single Qantas office.
  • 1.2British dated A million million million (1,000,000,000,000,000,000 or 1018).
    More example sentences
    • Furthermore, the British trillion is a million times of its American counterpart!
    • A British trillion used to be one million American trillions, but they are mostly the same now.



More example sentences
  • Once again, for the millionth and trillionth time (oh, trust me, I know), I am asking my lovely readers to become lovelier reviewers.
  • Neko called Ruy's cell phone for the trillionth time and still nobody picked up.


late 17th century: from French, from million, by substitution of the prefix tri- 'three' for the initial letters.

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