reductio ad absurdum

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re·duc·ti·o ad ab·sur·dum

 (rĭ-dŭk′tē-ō ăd əb-sûr′dəm, -zûr′-, -shē-ō)
n. pl. re·duc·ti·o·nes ad absurdum (-ō′nēz, -nās)
Disproof of a proposition by showing that it leads to absurd or untenable conclusions.

[Medieval Latin reductiō ad absurdum : Latin reductiō, a bringing back, reduction + Latin ad, to + Latin absurdum, absurdity, from neuter of absurdus, absurd.]

reductio ad absurdum

(rɪˈdʌktɪəʊ æd æbˈsɜːdəm)
1. (Logic) a method of disproving a proposition by showing that its inevitable consequences would be absurd
2. (Logic) a method of indirectly proving a proposition by assuming its negation to be true and showing that this leads to an absurdity
3. application of a principle or proposed principle to an instance in which it is absurd
[Latin, literally: reduction to the absurd]

re•duc•ti•o ad ab•sur•dum

(rɪˈdʌk tiˌoʊ ˈæd æbˈsɜr dəm, -ˈzɜr-, -ʃiˌoʊ)
a reduction to an absurdity; the refutation of a proposition by demonstrating that its logical conclusion is absurd.
[1735–45; < Latin]

reductio ad absurdum

A Latin phrase meaning reduction to absurdity, used to mean carrying an argument to the point at which it becomes absurd.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.reductio ad absurdum - (reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction
disproof, falsification, refutation - any evidence that helps to establish the falsity of something
References in classic literature ?
But as these arguments are largely a reductio ad absurdum of other theories, among which that which I am advocating is not included, I cannot regard them as establishing their contention.
And now the inevitable reductio ad absurdum has been reached with both clubs shut up.
And we may very easily see this process carried to its ultimate reductio ad absurdum in the next twenty years.
The most exuberant chapter in the book is "The District of China is Not the District of Columbia," where Ruskola launches his conclusions reductio ad absurdum.
Comprising 250 works from antiquity to today, the show includes Richard Meitner's Reductio ad Absurdum (1977).
Really, today's LGBT activists, along with their sycophantic allies (like the frightened little toadies at Reuters) signify the embodiment of reductio ad absurdum.
After a brief restatement of PTPTI, we will proceed to analyze the first argument: namely, that by performing a reduction ad absurdum on the time-preference principle we obtain the unacceptable result that man must never act or consume, or, which is the same, man must always prefer the future (other things equal).
You don't have a "proof; you have a reductio ad absurdum.
However, since Block did not construct a deductive counterargument against the claim that the principle of proportionality is built into the NAP, but instead resorted to an intuitive argument based on a thought experiment, I feel justified in replying with an equally intuition-based reductio ad absurdum.
The fact that people are being prosecuted for using cannabis, while alcohol remains a staple commodity, is surely the reductio ad absurdum of any notion that our drug laws are designed to keep people from harming themselves or others.
For Osborne, this reductio ad absurdum seemed so conclusive that there was no need to justify his controversial economic beliefs.