Quintillion

//kwɪnˈtɪljən// noun, num, slang

Definitions

Noun
  1. 1
    Any very large number, exceeding normal description. excessive, figuratively, slang
  2. 2
    the number that is represented as a one followed by 18 zeros in the US wordnet
Numeral
  1. 1
    Either of two very large amounts:; A billion billion: 1 followed by eighteen zeros, 10¹⁸. Australian, British, US, modern

    "Last week, we used[…]the BBC News website's biggest number: 9,223,372,036,854,775,808, that's 9.2 quintillion[…][the maximum video viewer count on YouTube's] updated counter software."

  2. 2
    Either of two very large amounts:; A million quadrillion: 1 followed by 30 zeros, 10³⁰. Australia, British, dated
  3. 3
    An unspecified very large number. colloquial, excessive

    "Near-synonyms: gazillion; see also Thesaurus:zillion"

Etymology

Etymology 1

From French quintillion. By surface analysis, quint- (“five”) + -illion.

Etymology 2

From French quintillion. By surface analysis, quint- (“five”) + -illion.

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