millionth

American  

[mil-yuhnth] / ˈmɪl yənθ /

adjective

1. coming last in a series of a million.

2. being one of a million equal parts.

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noun

1. the millionth member of a series.

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

millionth British  

/ ˈmɪljənθ /

noun

1. 1. one of 1 000 000 approximately equal parts of something

   2. ( as modifier )

      a millionth part

2. one of 1 000 000 equal divisions of a particular scientific quantity

3. the fraction equal to one divided by 1 000 000

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adjective

1. (usually prenominal)

   1. being the ordinal number of 1 000 000 in numbering or counting order, etc

   2. ( as noun )

      the millionth to be manufactured

Etymology

Origin of millionth

First recorded in 1665–75; million + -th ²

Example Sentences

“Because acting superior to everybody and hibernating in my bedroom reading Twilight for the millionth time is only making your summer last an eternity.”

From Literature

Her light brown ponytail bounces against her shoulders, and I’m struck for the millionth time by how pretty she is, even redfaced and a little bit sweaty.

From Literature

For scale, a nanometer is one millionth of a millimeter.

From Science Daily

For probably the millionth time in my life, I wondered why everyone else got watertight brains, while mine was apparently Swiss cheese.

From Literature

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