reductio

noun
re·​duc·​tio | \ rə̇ˈdəkshēˌō, rēˈ-; rāˈdu̇ktēˌō\
plural reductiones\ ⸗ˌ⸗⸗ˈōˌnēz ; ⸗ˌ⸗⸗ˈōˌnās \

Definition of reductio

: an act or process of reducing used as the first term in phrases relating to disproof of a proposition by arguing it to an obviously false conclusion reductio ad impossible — compare ad absurdum

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History and Etymology for reductio

Late Latin

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to deny responsibility for

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