Dictionary.com

quintillion

[ kwin-til-yuhn ]
/ kwɪnˈtɪl yən /
Save This Word!

noun, plural quin·til·lions, (as after a numeral) quin·til·lion.
a cardinal number represented in the U.S. by 1 followed by 18 zeros, and in Great Britain by 1 followed by 30 zeros.
adjective
amounting to one quintillion in number.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of quintillion

1665–75; <Latin quīnt(us) fifth + -illion (as in million)

OTHER WORDS FROM quintillion

quin·til·lionth, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use quintillion in a sentence

British Dictionary definitions for quintillion

quintillion
/ (kwɪnˈtɪljən) /

noun plural -lions or -lion
(in Britain, France, and Germany) the number represented as one followed by 30 zeros (10 30)US and Canadian word: nonillion
(in the US and Canada) the number represented as one followed by 18 zeros (10 18)Former Brit word: trillion

Derived forms of quintillion

quintillionth, adjective

Word Origin for quintillion

C17: from Latin quintus fifth + -illion, as in million
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK