Pro*lu"sion (?), n. [L. prolusio, fr. proludere to prelude; pro before + ludere to play: cf. F. prolusion, It. prolusione.] A trial before the principal performance; a prelude; hence, an introductory essay or exercise. "Domestic prolusions." Thackeray.

Her presence was in some measure a restraint on the worthy divine, whose prolusion lasted.