millionth

[ mil-yuhnth ]

/ ˈmɪl yənθ /

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adjective

coming last in a series of a million.

being one of a million equal parts.

noun

the millionth member of a series.

a millionth part, especially of one (1/1,000,000).

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of millionth

First recorded in 1665–75; million + -th²

Words nearby millionth

million, millionaire, millionairess, million electron volts, millionfold, millionth, millipede, milliradian, millirem, milliroentgen, millisecond

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use millionth in a sentence

That’s nearly a millionth of the thickness of regular office paper.
This new material is as strong as steel—but lighter|Shi En Kim|February 17, 2022|Popular-Science
If they’re right, it could be a look back into the very earliest flickers of time—what the universe looked like in the first millionth of a second after the Big Bang.
Scientists found a fleeting particle from the universe’s first moments|Rahul Rao|January 28, 2022|Popular-Science
She’ll have the last laugh, and its sound will echo long after the last tweet earns its millionth like.
Zola Is a Wild Road Trip Movie That Works Against All Odds|Stephanie Zacharek|June 25, 2021|Time
Smaller than a sesame seed, the bit of brain was about a millionth of an entire brain’s volume.
A deep look at a speck of human brain reveals never-before-seen quirks|Laura Sanders|June 9, 2021|Science News

Either way, the timescales for technological advances are an instant compared to the timescales of the Darwinian evolution that led to humanity’s emergence—and more relevantly, less than a millionth of the vast expanses of cosmic time ahead.
If Aliens Exist, Here’s How We’ll Find Them - Issue 97: Wonder|Martin Rees & Mario Livio|February 24, 2021|Nautilus
And a milestone: we may have prevented the one millionth baby from being infected with HIV.
These Are The 5 Scary Health Threats The CDC Will Tackle In 2014|Brandy Zadrozny|December 16, 2013|DAILY BEAST
The one-millionth phone recycled with an ecoATM was processed in April.
ecoATM offers consumers a new way to sell used cell phones and electronic devices|Sarah Langs|September 1, 2013|DAILY BEAST
In July, 2012, he awarded a house to his three-millionth Twitter follower.
Hugo Chavez: Great Timing, Awful Leadership|David Frum|March 9, 2013|DAILY BEAST
For the millionth time the picture served to show how mesmerizingly crisp Obama always looks.
The Heat Quotient|Tina Brown|October 28, 2008|DAILY BEAST
And then I thought for the millionth time what an awful mistake it is to be fastidious.
A Boswell of Baghdad|E. V. Lucas
The ninety-five millionth mile waits on us silently, at the doorways of our souls night and day, and we wait on It.
The Voice of the Machines|Gerald Stanley Lee
This calculation took about one-millionth of a second, and I plunged for the gate, "like a pawing horse let go."
My Life in Many States and in Foreign Lands|George Francis Train
Mr. Rockefeller does not use the oil-wells he owns, nor a hundred-millionth part of the coal his shares in coal-mines represent.
The Common Sense of Socialism|John Spargo
They will make a good man, but they will not make a good painter,—no, nor the millionth part of a painter.
The Stones of Venice, Volume III (of 3)|John Ruskin

British Dictionary definitions for millionth

millionth

/ (ˈmɪljənθ) /

noun

one of 1 000 000 approximately equal parts of something
(as modifier)a millionth part

one of 1 000 000 equal divisions of a particular scientific quantityRelated prefix: micro-

the fraction equal to one divided by 1 000 000

adjective

(usually prenominal)

being the ordinal number of 1 000 000 in numbering or counting order, etc
(as noun)the millionth to be manufactured

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