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1. The ordinal number matching the number million in a series.
2. One of a million equal parts.

mil′lionth adv. & adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Mathematics)
a. one of 1 000 000 approximately equal parts of something
b. (as modifier): a millionth part.
2. (Units) one of 1 000 000 equal divisions of a particular scientific quantity.
3. (Mathematics) the fraction equal to one divided by 1 000 000
(Mathematics) (usually prenominal)
a. being the ordinal number of 1 000 000 in numbering or counting order, etc
b. (as noun): the millionth to be manufactured.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈmɪl yənθ)

1. coming last in a series of a million.
2. being one of a million equal parts.
3. the millionth member of a series.
4. a millionth part, esp. of one (1/1,000,000).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.millionth - position 1,000,000 in a countable series of things
rank - relative status; "his salary was determined by his rank and seniority"
2.millionth - one part in a million equal parts
common fraction, simple fraction - the quotient of two integers
Adj.1.millionth - the ordinal number of one million in counting order
ordinal - being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


Related words
combining form micro-
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
المليونجُزء من مليون
miljónastimiljónasti hluti
1.000.000.uncu1/1.000.000milyonda birmilyonuncu


A. ADJmillonésimo
B. Nmillonésimo m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


adj (= fraction)millionstel; (in series) → millionste(r, s)
nMillionstel nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


1. adjmilionesimo/a
2. n (in series) → milionesimo/a; (fraction) → milionesimo
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(ˈmiljən) plurals ˈmillion (1 ~2), ˈmillions (2, ~3)
– noun.
1. (preceded by a, a number, or a word signifying a quantity) the number 1,000,000. a million; one million; five million.
2. the figure 1,000,000.
3. a million pounds or dollars. Her fortune amounts to several million(s).
(preceded by a, a number, or a word signifying a quantity) 1,000,000 in number. six million people.
having a million (of something). a million-pound banknote.
ˌmillioˈnaire (-ˈneə) feminine millioˈnairess noun
a person having a million pounds, dollars etc or more.
ˈmillionth noun
1. one of a million equal parts.
2. the last of a million (people, things etc) or (the person, thing etc) in an equivalent position. the millionth (car).
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
No one can say in how far it is possible for man to advance in this way toward an understanding of the laws of history; but it is evident that only along that path does the possibility of discovering the laws of history lie, and that as yet not a millionth part as much mental effort has been applied in this direction by historians as has been devoted to describing the actions of various kings, commanders, and ministers and propounding the historians' own reflections concerning these actions.
But I must be content with only one more and a concluding illustration; a remarkable and most significant one, by which you will not fail to see, that not only is the most marvellous event in this book corroborated by plain facts of the present day, but that these marvels (like all marvels) are mere repetitions of the ages; so that for the millionth time we say amen with Solomon --Verily there is nothing new under the sun.
As I look at it, a millionth part of a railway is worth fully as much as an acre of waste land on the banks of the Ohio.
Now all these modified descendants from a single species, are represented as related in blood or descent to the same degree; they may metaphorically be called cousins to the same millionth degree; yet they differ widely and in different degrees from each other.
If there were a millionth fraction of self-interest in my offer, I should not have made it so openly; and I should not have offered her ten thousand only, when five weeks ago I offered her more, Besides, I may, perhaps, very soon marry a young lady, and that alone ought to prevent suspicion of any design on Avdotya Romanovna.
The 10 millionth Mini car produced globally, which rolled off the assembly line last month, also took part in the event.
M2 EQUITYBITES-July 10, 2019--Mahindra rolls out one millionth vehicle
Auto Business News-July 10, 2019--Mahindra rolls out one millionth vehicle
Hydrabad -- The market-leader in Pakistan's Consumer-Electronics and Home Appliances market - Dawlance has now achieved another huge milestone, by manufacturing its Ten Millionth unit.
KARACHI -- The market-leader in Pakistan's consumer-electronics and home appliances market - Dawlance has now achieved another huge milestone, by manufacturing its ten millionth unit.
Summary: The 10 millionth citizen of Azerbaijan was born in Baku