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

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

• turbellarians
• turbid
• turbidimeter
• turbidimeters
• turbidite
• turbidites
• turbidities
• turbidity
• turbidity current
• turbidity currents
• turbidly
• turbidness
• turbidnesses
• turbinacious
• turbinal
• turbinals
• turbinate
• turbinated
• turbinates
• turbination
• turbine
• turbined
• turbine pump
• turbine pumps
• turbines