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

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

• mortifiers
• mortifies
• mortify
• mortifying
• mortifyingly
• mortise
• mortised
• mortise lock
• mortise locks
• mortiser
• mortisers
• mortises
• mortising
• mortling
• mortlings
• mortmain
• mortmains
• Morton's fork
• morts
• mort-safe
• mort-safes
• mort-stone
• mortuaries
• mortuary
• morula