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

• thunder-plump
• thunder-plumps
• thunders
• thunder sheet
• thunder sheets
• thundershower
• thundershowers
• thunderstone
• thunderstones
• thunderstorm
• thunderstorms
• thunderstricken
• thunderstrike
• thunderstrikes
• thunderstriking
• thunder-stroke
• thunder-strokes
• thunderstruck
• thundery
• thundrous
• Thur.
• Thurberesque
• thurible
• thuribles
• thurifer