millionth

[ mil-yuh nth ]

/ ˈmɪl yənθ /

coming last in a series of a million.

being one of a million equal parts.

the millionth member of a series.

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

Origin of millionth

First recorded in 1665–75; million + -th²

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
I know I haven't done a millionth part of what I should have done for you.

Thirty |Howard Vincent O'Brien
That's three-millionths of a millionth of a ampere-second at one volt.

The Machine That Saved The World |William Fitzgerald Jenkins
As this unit is inconveniently large, for practical applications the unit microfarad—millionth of a farad—is employed.

Cyclopedia of Telephony & Telegraphy Vol. 1 |Kempster Miller

Even fifth-order rays would require a millionth of a second or so to set the courses.

Skylark Three |Edward Elmer Smith
Any amount of time would include a second, and even a millionth part of a second.

Astounding Stories, August, 1931 |Various

millionth

/ (ˈmɪljənθ) /

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

the fraction equal to one divided by 1 000 000

(usually prenominal)