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

• decaudating
• decay
• decayed
• decay heat
• decaying
• decays
• DECC
• Decca
• Decca Flight Log
• Decca Navigator System
• deccie
• deccies
• decease
• deceased
• deceases
• deceasing
• decedent
• decedents
• deceit
• deceitful
• deceitfully
• deceitfulness
• deceitfulnesses
• deceits
• deceivabilities