prolusion /prə-, prō-looˈzhən or -lūˈ/

1. A preliminary performance, activity or display
2. An essay preparatory to a more solid treatise

proluˈsory /-sə-ri/ adjective

• institutionalization
• institutionalize
• institutionalized
• institutionalizes
• institutionalizing
• institutionally
• institutionary
• institutions
• institutist
• institutists
• institutive
• institutively
• institutor
• institutors
• in stock
• in store
• in-store
• instreaming
• instreamings
• in strength
• instress
• instresses
• instruct
• instructed
• instructible