| algal oxidation pond | <ecology> A wide, shallow pond used in waste water treatment, the algae produce oxygen so that bacteria can aerobically digest sewage in the water. (09 Oct 1997) |
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| pond | <ecology> A body of standing water which is smaller than a lake, often artifically formed. (09 Oct 1997) |
| pond fracture | A circular depressed skull fracture. (05 Mar 2000) |
| oxidation pond | A pond that contains partially treated wastewater which is then left to allow the growth of algae and bacteria which decompose therest of the waste. (09 Oct 1997) |