Definition of obvert in English:

obvert

verb əbˈvəːtəbˈvərt

[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’.
〔逻〕反换（命题）
Example sentencesExamples
- In response to growing concern and upon the advice of a specially appointed committee, the rule was obverted.
- An original statement is obverted, the result is converted and that result is obverted again.

Derivatives

obversion

noun

Logic

Obversion always works if it's done right.
Example sentencesExamples
- 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- 'towards' + vertere 'to turn'.

Definition of obvert in US English:

obvert

verbəbˈvərt

[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.”.
〔逻〕反换（命题）
Example sentencesExamples
- 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.

Origin

Early 17th century (in the sense ‘turn something until it is facing’): from Latin obvertere, from ob- ‘towards’ + vertere ‘to turn’.

词汇	obvert
释义	Definition of obvert in English: obvert verb əbˈvəːtəbˈvərt [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’. 〔逻〕反换（命题） Example sentencesExamples In response to growing concern and upon the advice of a specially appointed committee, the rule was obverted. An original statement is obverted, the result is converted and that result is obverted again. Derivatives obversion noun Logic Obversion always works if it's done right. Example sentencesExamples 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- 'towards' + vertere 'to turn'. Definition of obvert in US English: obvert verbəbˈvərt [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.”. 〔逻〕反换（命题） Example sentencesExamples 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. Origin Early 17th century (in the sense ‘turn something until it is facing’): from Latin obvertere, from ob- ‘towards’ + vertere ‘to turn’.
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