ACCLAMATION is a 11 letter word that starts with A.

1. \Ac`cla*ma"tion\, n. [L. acclamatio: cf. F.
   acclamation.]
   1. A shout of approbation, favor, or assent; eager expression
      of approval; loud applause.
            On such a day, a holiday having been voted by
            acclamation, an ordinary walk would not satisfy the
            children.                             --Southey.
   2. (Antiq.) A representation, in sculpture or on medals, of
      people expressing joy.
   {Acclamation medals} are those on which laudatory
      acclamations are recorded. --Elmes.
   

2. \Ac`cla*ma"tion\, n.
   In parliamentary usage, the act or method of voting orally
   and by groups rather than by ballot, esp. in elections;
   specif. (R. C. Ch.), the election of a pope or other
   ecclesiastic by unanimous consent of the electors, without a
   ballot.