homoiousian

H4O1M3O1I1O1U1S1I1A1N1
/hɒmɔɪˈuːzɪən/

adjective

Having a similar but not identical essence, especially with reference to the first and second persons of the Trinity.

Scrabble 16

Meanings

adjectivehomoiousian (not comparable)
  1. not comparableHaving a similar but not identical essence, especially with reference to the first and second persons of the Trinity.

    Human ill-nature needs but some Homoiousian iota, or even the pretence of one; and will flow copiously through the eye of a needle: thus always must mortals go jargoning and fuming […].

    1837, Thomas Carlyle, chapter III, in The French Revolution: A History […], volume II (The Constitution), London: Chapman and Hall, →OCLC, book IV (Varennes)
nounhomoiousian (plural homoiousians)

plural homoiousians

  1. historicalOne of the Semi-Arians of the 4th century who held that the Son was of like, but not the same, essence or substance with the Father.

    The Greek word, which was chosen to express this mysterious resemblance, bears so close an affinity to the orthodox symbol, that the profane of every age have derided the furious contests which the difference of a single diphthong excited between the Homoousians and the Homoiousians.

    1781, Edward Gibbon, chapter XXI, in The History of the Decline and Fall of the Roman Empire, volume II, London: […] W[illiam] Strahan; and T[homas] Cadell, […], →OCLC, page 257

Origin

  1. Ancient Greekὁμοιούσιος
  2. Englishhomoiousian

From Ancient Greek ὁμοιούσιος (homoioúsios), from ὅμοιος (hómoios, “like, similar”) + οὐσίᾱ (ousíā, “essence”).

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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