A thing assumed or taken for granted; an assumption or premise in an argument.
From Latin 'assumptus,' the past participle of 'assumere.' This is a very rare English word that appears primarily in medieval philosophical and theological texts, never achieving widespread use in English despite its logical formation.
In medieval scholasticism, an 'assumpt' was technically the minor premise of a syllogism—the part you 'assumed' for the sake of argument. It's virtually extinct, replaced by 'assumption' and 'premise,' but Catholic theology texts still reference it, making it a fossil from when Latin-influenced English philosophy was more technical.
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