Entry 1 sense Webster, 1913 Tumultuation /(tū̇*mŭl`tū̇*ā"shŭn)/ · Tu·mul·tu·a·tion · IPA 01 n. Irregular or disorderly movement; commotion; as, the tumultuation of the parts of a fluid. 1. Irregular or disorderly movement; commotion; as, the tumultuation of the parts of a fluid.[Obs.]