bacteria bed
 

* 1.layer of sand or gravel used to expose sewage effluent to air and the action of microorganisms

English Related Words* a bed of roses

* a canopied bed

* a soft bed

* a trundle bed

* additional bed

* advia bacteria

* aerobic bacteria

* against bacteria

* air bed

* air the bed

* alveolar bed

* am i allowed to get out of bed

* amenity bed

* ammonifying bacteria

* anaeobic bacteria