illation

I1L1L1A1T1I1O1N1
UK/ɪˈleɪʃ(ə)n/US/əˈleɪʃ(ə)n/

noun

The act of inferring or concluding, especially from a set of premises; a conclusion, a deduction.

Scrabble 8

Meanings

nounillation (countable and uncountable, plural illations)

plural illations

  1. countableuncountableThe act of inferring or concluding, especially from a set of premises; a conclusion, a deduction.

    Now herein there seems to be a very erroneous Illation: from the Indulgence of God unto Cain, concluding an immunity unto himself […]

    1650, Thomas Browne, chapter I, in Pseudodoxia Epidemica: […], 2nd edition, London: […] A[braham] Miller, for Edw[ard] Dod and Nath[aniel] Ekins, […], →OCLC, 1st book, page 2
    2 more examples

    it so orders the intermediate Ideas, as to discover what Connection there is in each Link of the Chain, whereby the Extreams are held together; and thereby, as it were, to draw into View the Truth sought for, which is what we call Illation or Inference […]

    1689 (indicated as 1690), [John Locke], An Essay Concerning Humane Understanding. […], London: […] Eliz[abeth] Holt, for Thomas Basset, […], →OCLC

    Adriaan moved to Pierce’s American illation whereby an if begets a therefore, event by event, the javelin’s flight issuing from the web of contingencies in which we may locate the javelin and the javelineer […]

    1974, Guy Davenport, Tatlin!

    Synonyms: determination, ergotism, verdict, award, censure, choice, opinion, conclusion

Synonyms & antonyms

nounThe act of inferring or concluding, especially from a set of premises; a conclusion, a deduction.

More synonyms by meaning

nounthe reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation

Similar
Broader
reasoninglogical thinkingabstract thought

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinillātiō“logical inference, deduction, conclusion”
  2. Englishillation

From Latin illātiō (“logical inference, deduction, conclusion”), from illātus, perfect passive participle of inferō (“carry or bring into somewhere; conclude”), from in + ferō (“bear, carry; suffer”).

Full word history & related roots →

Translations

Bulgarian заключение, извод
  • заключение (zaključenie)action of concluding or inferring
  • извод (izvod)action of concluding or inferring
Chinese Mandarin 演繹 /演绎, 推論 /推论
  • 演繹 /演绎 (yǎnyì)action of concluding or inferring
  • 推論 /推论 (tuīlùn)action of concluding or inferring
  • 推定 (tuīdìng)action of concluding or inferring
French illation
  • illationaction of concluding or inferring
German Schlussfolgerung, Herleitung
  • Schlussfolgerungaction of concluding or inferring
  • Herleitungaction of concluding or inferring
Hungarian következtetés
  • következtetésaction of concluding or inferring
Japanese 推定
  • 推定 (suitei)action of concluding or inferring
Polish indukcja, dedukcja
  • indukcjaaction of concluding or inferring
  • dedukcjaaction of concluding or inferring
Portuguese ilação
  • ilaçãoaction of concluding or inferring
Russian вы́вод, заключе́ние
  • вы́вод (vývod)action of concluding or inferring
  • заключе́ние (zaključénije)action of concluding or inferring
  • умозаключе́ние (umozaključénije)action of concluding or inferring
Spanish deducción
  • deducciónaction of concluding or inferring

Rhymes & wordplay

Sounds the same

Cite this entry
APA

illation. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/illation

MLA

“illation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/illation. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “illation,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/illation.

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