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

• antiqueness
• antiquenesses
• antiques
• antiquing
• antiquitarian
• antiquitarians
• antiquities
• antiquity
• antirachitic
• antirachitics
• anti-racism
• anti-racisms
• anti-racist
• antiretroviral
• antiretrovirals
• antiriot
• anti-roll
• anti-roll bar
• antirrhinum
• antirrhinums
• antirust
• antis
• antiscian
• antiscians
• antiscorbutic