HyperDic: bacteria_bed

English > 1 sense of the expression bacteria bed:
NOUNartifactbacteria bedlayer of sand or gravel used to expose sewage effluent to air and the action of microorganisms
English > bacteria bed: 1 sense > noun 1, artifact
Meaninglayer of sand or gravel used to expose sewage effluent to air and the action of microorganisms.
Broaderfilterdevice that removes something from whatever passes through it

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