I. ˈmilyən(t)th, ˈmiy- adjective
1.
a. : being number one million in a countable series — see number table
b. : being one of a million equal parts into which something is divisible
2. : constructed or drawn on a scale of one millionth of the natural size
a millionth map
a millionth globe
II. noun
( plural millionths -yən(t)s, -yən(t)ths)
1. : number one million in a countable series
2. : the quotient of a unit divided by one million : one of a million equal parts of something