https://www.merriam-webster.com/dictionary/quadrillion

Quadrillion definition is - a number equal to 1 followed by 15 zeros; also, British : a number equal to 1 followed by 24 zeros.

https://www.dictionary.com/browse/quadrillion

Quadrillion definition, a cardinal number represented in the U.S. by 1 followed by 15 zeros, and in Great Britain by 1 followed by 24 zeros. See more.

https://en.wiktionary.org/wiki/quadrillion

... the free dictionary. Jump to navigation Jump to search. See also: Quadrillion ... Etymology[edit]. From French quadrillion, from quadri- (“four”) + -illion.

https://www.mathsisfun.com/definitions/quadrillion.html

Illustrated definition of Quadrillion: A thousand million millions. 1000 x 1000000 x 1000000 1000000000000000 Which is a 1 followed...

https://en.wikipedia.org/wiki/Names_of_large_numbers

This article lists and discusses the usage and derivation of names of large numbers, together .... The Oxford English Dictionary comments that googol and googolplex are .... (Or if you prefer the first mark can signify million, the second mark byllion, the third mark tryllion, the fourth quadrillion, the fifth quyillion, the sixth sixlion, ...

https://www.vocabulary.com/dictionary/quadrillion

It's a little time consuming to write out the number one quadrillion, since it's a one and fifteen zeros.

https://blog.oxforddictionaries.com/2014/12/09/psy-youtube-quintillion/

Dec 9, 2014 ... Home > Quadrillion, quintillion, sextillion, and other huge numbers ... The disparity between trillion and the final two numbers, quadrillion and quintillion, in fact, is so great ... Video: what is the origin of the term 'brass monkey'?

https://www.thoughtco.com/zeros-in-million-billion-trillion-2312346

Jan 20, 2019 ... Quadrillion 1,000,000,000,000,000 (15 zeros) ... According to this definition of a billion, the number is written with a 1 followed by 12 zeros.

https://www.thefreedictionary.com/quadrillion

Define quadrillion. quadrillion synonyms, quadrillion pronunciation, quadrillion translation, English dictionary definition of quadrillion. n. 1. The cardinal number  ...

https://www.quadrillion.com/number.shtm

What is a Quadrillion? Calculator. There are two systems in use for naming numbers larger than a million. American System. In the American system, the Latin ...