noun
oral rehydration solution; ORS
Medical term for a drink used to prevent or treat dehydration, especially from diarrhea or vomiting. Often abbreviated as ORS.
下痢のときは経口補水液を飲むとよい。
When you have diarrhea, it's good to drink oral rehydration solution.
薬局で経口補水液を買った。
I bought oral rehydration solution at the pharmacy.