ACCLAMATION (Lat. acclamatio, a shouting at), in deliberative or electoral assemblies, a spontaneous shout of approval or praise. Acclamation is thus the adoption of a resolution or the passing of a vote of confidence or choice unanimously, in direct distinction from a formal ballot or division. In the Roman senate opinions were expressed and votes passed by acclamation in such forms as Omnes, omnes, Aequum est, Justum est, etc.; and the praises of the emperor were celebrated in certain pre-arranged sentences, which seem to have been chanted by the whole body of senators. In ecclesiastical councils vote by acclamation is very common, the question being usually put in the form, placet or non placet. The Sacred College has sometimes elected popes by acclamation, when the cardinals simultaneously and without any previous consultation "acclaimed" one of their number as pontiff. A further ecclesiastical use of the word is in its application to set forms of praise or thanksgiving in church services, the stereotyped responses of the congregation. In modern parliamentary usage a motion is carried by acclamation when, no amendment being proposed, approval is expressed by shouting such words as Aye or Agreed.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)