quintillionth
/kwɪnˈtɪljənθ/
adjective
- Being one of a quintillion equal parts; the ordinal number matching the number one quintillion in a series.
- In the vast universe, our planet is just the quintillionth speck of dust.
- The quintillionth grain of sand on the beach is impossible to count.
- She claimed to have the quintillionth customer, but the store had only sold a few thousand items.
noun
- One of a quintillion equal parts of a whole.
- The scientist measured the mass to a quintillionth of a gram.
- A quintillionth of a second is an incredibly tiny unit of time.
- The chance of winning that lottery is less than a quintillionth.