succussion

suc·cus·sion

1. The act or process of shaking violently, especially as a method of diagnosis to detect the presence of fluid and air in a body cavity.
2. The condition of being shaken violently.

Origin: Latin succussiō, succussiōn-, from succussus, past participle of succutere, to toss up : sub-, up from below; see sub-  + quatere, to shake; see kwēt- in Indo-European roots.

Related Forms:

• suc·cusˈsa·toˌry (sə-kŭsˈə-tôrˌē, -tōrˌē) adjective