noun
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one of 1 000 000 approximately equal parts of something
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( as modifier )
a millionth part
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one of 1 000 000 equal divisions of a particular scientific quantity
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the fraction equal to one divided by 1 000 000
adjective
Etymology
Origin of millionth
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
I’m about to tell her—to admit for what feels like the ten millionth time— that I don’t know what that is, when Eddie asks, “What’s a petit four?”
From Literature
It sounds like something from the distant future, but nanotechnology - engineering at a scale of millionths of a millimetre - is already used in lots of everyday real-life tech.
From BBC
A difference of 477 millionths of a second may seem insignificant.
From Science Daily
I have about a millionth of a second where I see it coming before it slams into my glasses and face and the side of my nose like an orange wrecking ball.
From Literature
These little red dots emit much of their light at wavelengths longer than a 10 millionth of a meter, in the mid-infrared.
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
