Word.ws English Dictionary

undecillionth

undecillionth adjective: the ordinal form of the number undecillion.

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.

Forms of undecillionth

pluralundecillionths

Origin of undecillionth

From undecillion + -th (ordinal suffix).

Questions about undecillionth

What does undecillionth mean?
Undecillionth means the ordinal form of the number undecillion.
What part of speech is undecillionth?
Undecillionth can be an adjective or a noun.

Words near undecillionth in the dictionary

  1. undeciding
  2. undecidualized
  3. undeciduous
  4. undecillion
  5. undecillions
  6. undecillionth
  7. undecillionths
  8. undecimal
  9. undecimalized
  10. undecimarticulate
  11. undecimated

Source and license

Adapted from Wiktionary: undecillionth (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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