n.
Pronunciation: ˌ s ə -p ə - ' zi-sh ə n
Function: noun
Etymology: Middle English supposicioun, from Anglo-French supposicion, from Late Latin supposition-, suppositio, from Latin, act of placing beneath, from supponere
Date: 15th century
1 : something that is supposed : HYPOTHESIS
2 : the act of supposing
– sup · po · si · tion · al \ - ' zish-n ə l, - ' zi-sh ə -n ə l \ adjective