zeroth

Z10E1R1O1T1H4
Australia, New Zealand, UK/ˈzɪəɹəʊθ/US/ˈzɪɹoʊθ/US/ˈziɹoʊθ/

adjective

In the initial position in a sequence whose elements are numbered starting at zero; the ordinal number corresponding to zero.

“The zeroth order polynomial approximation is constant.”

Similar
nothingthnoughthordinal
UncommonScrabble 18
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Meanings

adjectivezeroth (not comparable)

alternative zeroeth

  1. not comparablemathematicsIn the initial position in a sequence whose elements are numbered starting at zero; the ordinal number corresponding to zero.

    The zeroth order polynomial approximation is constant.

  2. not comparableCorresponding to a position preceding the first.

    A and C are in equilibrium following the Zeroth Law of Thermodynamics.

Synonyms & antonyms

Similar
nothingthnoughth

adjectivepreceding even the first

Similar
ordinal
Also see
ordinal

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From zero + -th (ordinal suffix).

Full word history & related roots →

Translations

Arabic صِفْرِيّ
  • صِفْرِيّ (ṣifriyy)ordinal number corresponding to zero
Bulgarian ну́лев, нулев
  • ну́лев (núlev)ordinal number corresponding to zero
  • нулев (nulev)corresponding to a position preceding the first
Chinese Mandarin 第零
  • 第零 (dì-líng)ordinal number corresponding to zero
Czech nultý
  • nultýordinal number corresponding to zero
Danish nulte
  • nulteordinal number corresponding to zero
Esperanto nula, nulaj
  • nulaordinal number corresponding to zero
  • nulajordinal number corresponding to zero
Finnish nollas, nollas
  • nollasordinal number corresponding to zero
  • nollascorresponding to a position preceding the first
French zérotième, nullième
  • zérotièmeordinal number corresponding to zero
  • nullièmeordinal number corresponding to zero
  • zéroièmeordinal number corresponding to zero
German nullte, nullte
  • nullteordinal number corresponding to zero
  • nulltecorresponding to a position preceding the first
Greek μηδενικός
  • μηδενικός (midenikós)ordinal number corresponding to zero
Hungarian nulladik
  • nulladikordinal number corresponding to zero
Irish nialasach
  • nialasachordinal number corresponding to zero
Italian zeresimo, zeresimo
  • zeresimoordinal number corresponding to zero
  • zeresimocorresponding to a position preceding the first
Japanese 第零, 第ゼロ
  • 第零 (dairei)ordinal number corresponding to zero
  • 第ゼロ (dai-zero)ordinal number corresponding to zero
  • 零番目 (reiban-me)ordinal number corresponding to zero
  • ゼロ番目 (zero-ban-me)ordinal number corresponding to zero
Korean 영째, 영번째
  • 영째 (yeongjjae)ordinal number corresponding to zero
  • 영번째 (yeongbeonjjae)ordinal number corresponding to zero
Malay kekosong
  • kekosongordinal number corresponding to zero
Norwegian Bokmål nulte
  • nulteordinal number corresponding to zero
Polish zerowy
  • zerowyordinal number corresponding to zero
Portuguese zerésimo
  • zerésimoordinal number corresponding to zero
Russian нулево́й
  • нулево́й (nulevój)ordinal number corresponding to zero
Slovak nultý
  • nultýordinal number corresponding to zero
Spanish cero, ceroésimo
  • ceroordinal number corresponding to zero
  • ceroésimoordinal number corresponding to zero
Swedish nollte
  • nollteordinal number corresponding to zero
Turkish sıfırıncı
  • sıfırıncıordinal number corresponding to zero
Ukrainian нульо́вий
  • нульо́вий (nulʹóvyj)ordinal number corresponding to zero
Urdu صِفَرْواں
  • صِفَرْواں (sifarvā̃)ordinal number corresponding to zero
Welsh serofed
  • serofedordinal number corresponding to zero

Rhymes & wordplay

Anagrams

Orthez
Cite this entry
APA

zeroth. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/zeroth

MLA

“zeroth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/zeroth. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “zeroth,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/zeroth.

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