undecillionth

English

Etymology

From undecillion +‎ -th (ordinal suffix).

Adjective

undecillionth (not comparable)

  1. The ordinal form of the number undecillion

Noun

undecillionth (plural undecillionths)

  1. The person or thing in the undecillionth position.
  2. One of an undecillion equal parts of a whole.