prolusory

[ proh-loo-suh-ree, -zuh- ]
/ proʊˈlu sə ri, -zə- /

adjective

serving for prolusion.
of the nature of a prolusion.

Origin of prolusory

1865–70; < Medieval Latin prōlūsōrius, equivalent to prōlūd-, stem of prōlūdere (see prolusion) + -tōrius -tory1, with dt > s