\Pro`ro*ga"tion\, n. [L. prorogatio: cf. F.
prorogation.]
1. The act of counting in duration; prolongation. [Obs.]
   --South.

2. The act of proroguing; the ending of the session of
   Parliament, and postponing of its business, by the command
   of the sovereign. [Eng.]

Note: After an adjournment all things continue as they were
      at the adjournment; whereas, after a prorogation, bill
      introduced and nut passed are as if they had never been
      begun at all. --Mozley & W.