What does acclamation mean?
The definition of acclamation
Ac`cla*ma”tion, n.
Etym: [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.