P / prōlūsĭo
noun

prōlūsĭo

gen. prōlūsōnis · gender feminine · decl. 3rd
a prelude; a preliminary exercise; trial
a prelude, transf., a preliminary exercise, trial, essay, Cic. de Or. 2, 80, 325; id. Div. in Caecil. 14, 47