quintillion [kwin-til -yuh n]
Word Origin
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. Show More
amounting to one quintillion in number. Show More
Origin of quintillion 1665–75; <
Latin quīnt(us )
fifth +
-illion (as in
million )
Related forms quin·til·lionth , noun, adjective Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for quintillion 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 Show More
Derived Forms quintillionth , adjective Word Origin for quintillion C17: from Latin quintus fifth + -illion, as in million
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for quintillion n. 1670s, from Latin quintus "the fifth" (see quinque- ) + ending from million . Cf. billion . In Great Britain, the fifth power of a million (1 followed by 30 zeroes); in U.S. the sixth power of a thousand (1 followed by 18 zeroes).
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Online Etymology Dictionary, © 2010 Douglas Harper
