acclamation

Short definition from Wiktionary

Noun

1. 1
   A shout of approbation, favor, or assent; eager expression of approval; loud applause.
2. 2
   The act of winning an election to a post because there were no other candidates.
3. 3
   A representation, in sculpture or on medals, of people expressing joy.
4. 4
   An oral vote taken without formal ballot and with much fanfare; typically an overwhelmingly affirmative vote.