impolder or empolder /im-pōlˈdər/

To make a polder of

• ferro-
• ferro-alloy
• ferro-alloys
• ferrocene
• ferrocenes
• ferro-chrome
• ferro-chromium
• ferroconcrete
• ferroconcretes
• ferrocyanide
• ferrocyanides
• ferrocyanogen
• ferrocyanogens
• ferroelectric
• ferroelectricity
• ferrograms
• ferrographies
• ferrography
• ferromagnesian
• ferromagnetic
• ferromagnetism
• ferromagnetisms
• ferro-manganese
• ferro-molybdenum
• ferro-nickel