Billionth

/ˈbɪl.jənθ/

Meaning & Definition

noun

One part in a billion equal parts.

He won the lottery with odds of one in a billionth.

The ordinal form of billion, referring to the position in a count.

She finished in the billionth place in the race.

adjective

Constituting the ordinal number matching the number one billion in a sequence.

This is the billionth time I've asked you to clean your room.

Being one part in a billion equal parts.

The concentration of the chemical in the water is one billionth of a percent.

From the word billion + the suffix -th.

billionth of a second

A very short amount of time, used in scientific contexts.

a billionth chance

An extremely unlikely possibility.

one in a billion

Indicating something that is extremely rare.

billion

The number equivalent to 1,000 million.

one billion

A numerical value of 1,000,000,000.

A very small amount or degree.

That problem is a billionth of what we used to deal with.

Referring to something that’s negligible or insignificant.

His complaint is about a billionth of an issue compared to the bigger problems.