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

• cen-
• cen.
• CEN
• cenacle
• cenacles
• cendré
• -cene
• CENELEC
• cenestheses
• cenesthesia
• cenesthesias
• cenesthesis
• CEng
• ceno-
• cenobite
• cenobites
• cenogenesis
• cenospecies
• cenotaph
• cenotaphs
• cenote
• cenotes
• Cenozoic
• cens
• cense