ac·cla·ma·tion \ˌakləˈmāshən\noun (-s) Etymology: Latin acclamation-, acclamatio, from acclamatus (past participle of acclamare) + -ion-, -io -ion 1.: a loud eager expression of approval, praise, or assent < she was received with acclamations — Walter Bagehot > 2.: an overwhelming approving vote by cheering, shouts, or hand clapping rather than by ballot < made a motion to elect the popular candidate to the chairmanship by acclamation >