A Latin phrase which means, approximately, "to absurdity." '''Context:''' "It just keeps going around and around, ad absurdum." Used in '''reductio ad absurdum''' - disproof by contradiction, wherein one follows a proposition to conclusions that are known to be false or are patently absurd. (X -> Y. ~Y. therefore ~X.) Closely related to AdInfinitum - "to infinity." Not related to "Argumentum''''''AdAbsurdum", which is argument by random & intimidating distractions that change the subject in ways that tickle your base. A favorite pastime of demagogues. http://www.zeroplayer.com/images/mhiab.jpg