obversion

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noun

The act of turning toward or downward.

“All men are mortal, so, by obversion, no men are immortal.”

OriginLatin obversio →
Scrabble 14
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Meanings

nounobversion (countable and uncountable, plural obversions)

plural obversions

  1. countableuncountableThe act of turning toward or downward.
  2. countableuncountablehuman sciencesAn immediate inference that denies the opposite of something previously affirmed.

    All men are mortal, so, by obversion, no men are immortal.

    1 more example

    From 'warmth is agreeable' we can affirm, by formal obversion, 'warmth is not disagreeable, and not indifferent.' We cannot affirm, without an examination of the subject matter, 'cold is disagreeable.'

    1870, Alexander Bain, Logic: Induction

Origin

  1. Latinobversio“a turning towards”
  2. Englishobversion

Latin obversio (“a turning towards”).

More words from Latin

Full word history & related roots →

Translations

Czech obverze
  • obverze(logic) inference
Cite this entry
APA

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

MLA

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

Chicago

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

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