1. Filter consisting of a layer of sand or gravel for filtering water

Derived forms: filter beds

Type of: filter

• aeronautical
• aeronautical engineer
• aeronautical engineering
• aeronautics
• aerophagia
• aerophilatelic
• aerophilately
• aerophile
• aerophilic
• aerophilous
• aerophyte
• aeroplane
• aeroplane landing
• aeroplane manoeuvre
• aeroplane mechanics
• aeroplane pilot
• aeroplane propeller
• aerosol
• aerosol bomb
• aerosol can
• aerosol container
• aerosolise
• aerosolised
• aerosolize
• aerosolized