QUADRILLION

quadrillion

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

quadrillion

(noun) the number that is represented as a one followed by 24 zeros; “in England they call a septillion a quadrillion”

Source: WordNet® 3.1

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Etymology

Numeral

quadrillion

(US, modern British and Australian, short scale) A thousand trillion (logic: 1,000 × 1,000^4): 1 followed by fifteen zeros, 10¹⁵.

(dated, UK, Australia, long scale) A million trillion (logic: 1,000 × 1,000,000^2): 1 followed by twenty-four zeros, 10²⁴.

Synonyms

• (10¹⁵): a long scale billiard

• (10²⁴): a short scale septillion

Noun

quadrillion (plural quadrillions)

(figuratively, slang, hyperbole) Any very large number, exceeding normal description.

Synonyms

• (any very large number): bajillion, bazillion, billion, dillion, fantillion, gadzillion, gagillion, gajillion, gazillion, godzillion, googillion, grillion, hojillion, hundred and one, infillion, jillion, kabillion, kajillion, katrillion, killion, kazillion, million, million and one, quintillion, robillion, skillion, squidillion, squillion, thousand and one, trillion, umptillion, zillion

Source: Wiktionary

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Quad*ril"lion, n. Etym: [F., fr. L. quater four times, akin to quattuor four, E. four; -- formed like million. See Four, Million.]

Definition: According to the French notation, which is followed also upon the Continent and in the United States, a unit with fifteen ciphers annexed; according to the English notation, the number produced by involving a million to the fourth power, or the number represented by a unit with twenty-four ciphers annexed. See the Note under Numeration.

Source: Webster’s Unabridged Dictionary 1913 Edition

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