quadrillionth
/kwəˈdrɪljənθ/
adjective
- Being the last item in a series of one quadrillion; the ordinal number corresponding to one quadrillion.
- In the quadrillionth year, the star finally burned out.
- She was the quadrillionth visitor to the website, winning a prize.
- The quadrillionth decimal place of pi is not commonly calculated.
noun
- One of one quadrillion equal parts of a whole.
- The measurement was accurate to a quadrillionth of a meter.
- Only a quadrillionth of the original sample remained after the reaction.
- A quadrillionth of a second is called a femtosecond.