From Middle English supposicioun, from Anglo-Norman supposicion, from Latin suppositiō, suppositiōnem (“supposition”), from sub- (“under”) + positiō, positiōnem (“position; theme”), from positus (“position”), from the perfect passive participle of pōnō, pōnere (“put, place”).
- Something that is supposed; an assumption made to account for known facts, conjecture.
- The act or an instance of supposing.
- See also Thesaurus:supposition
supposition f (plural suppositions)