Definition of "one-millionth" []

• One part in a million equal parts (noun)

WordNet. Princeton University. 2010.

• "This about one one-millionth of the flow that would be taken away, after Oxbow Hatchery gets all the water it needs."
• "That represents less than one-millionth of the radioactivity that Tepco estimates was released in the first week of April at the Daiichi complex, when 520 tons of water leaked from a crack that was later filled."
• "Then, a line of tiny holes, less than one-millionth of a meter in diameter, is punched into the metal, spaced five micrometers apart."