zillionth

Z10I1L1L1I1O1N1T1H4
/ˈzɪljənθ/

adjective

The ordinal form of the number zillion.

Scrabble 21
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Meanings

adjectivezillionth (not comparable)
  1. informalnot comparableThe ordinal form of the number zillion.
nounzillionth (plural zillionths)

plural zillionths

  1. informalThe person or thing in the zillionth position.
  2. informalOne of a zillion equal parts of a whole.

Origin

From zillion + -th (ordinal suffix).

Full word history & related roots →

Rhymes & wordplay

Rhymes with zillionth

millionth
All rhymes →
Cite this entry
APA

zillionth. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/zillionth

MLA

“zillionth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/zillionth. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “zillionth,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/zillionth.

Source: zillionth on Wiktionary, CC BY-SA 4.0.