Definition of obvert in English:

obvert

Syllabification: ob·vert
Pronunciation: /əbˈvərt, äb-
 
/

verb

[with object] Logic
  • Alter (a proposition) so as to infer another proposition with a contradictory predicate, e.g., “no men are immortal” to “all men are mortal.”.
    More example sentences
    • An original statement is obverted, the result is converted and that result is obverted again.
    • In response to growing concern and upon the advice of a specially appointed committee, the rule was obverted.

Derivatives

obversion

Pronunciation: /əbˈvərZHən, äb-/
noun
More example sentences
  • Obversion always works if it's done right.
  • Determine which of the three new moves: conversion, contraposition or obversion has taken place between the premise and conclusion of the argument.

Origin

early 17th century (in the sense 'turn something until it is facing'): from Latin obvertere, from ob- 'toward' + vertere 'to turn'.

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Pronunciation: grōˈteskərē
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grotesque quality or grotesque things collectively