Source : Webster's Revised Unabridged Dictionary (1913)

Sederunt \Se*de"runt\, n. [L., they sat, fr. sedere to sit.]
   A sitting, as of a court or other body.

         'T is pity we have not Burn's own account of that long
         sederunt.                                --Prof.
                                                  Wilson.

   {Acts of sederunt} (Scots Law), ordinances of the Court of
      Session for the ordering of processes and expediting of
      justice. --Bell.