trimorphism /trī-mörˈfi-zm/

1. Occurrence of three forms in the same species (biology)
2. The property of crystallizing in three forms (chem)

• lampholders
• lamphole
• lampholes
• lamp-hour
• lamp-hours
• lamping
• lampings
• lampion
• lampions
• lamplight
• lamplighter
• lamplighters
• lamplights
• lamplit
• lampoon
• lampooned
• lampooner
• lampooneries
• lampooners
• lampoonery
• lampooning
• lampoonist
• lampoonists
• lampoons
• lamppost