CEFR C2

duodecillionth

numeral

Meaning

A duodecillionth is one part in a duodecillion, which is a 1 followed by 39 zeros. It is an extremely small fraction, often used to express incredibly low probabilities or tiny parts of a whole.

Examples

  • The chances of winning the top prize in the national lottery are about one duodecillionth.
  • The scientist calculated that the new medicine had a duodecillionth chance of causing a severe allergic reaction.