| AZO | accumulation in the blood of nitrogen-bearing waste products (urea) that are usually excreted in the urine |
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| AZO | an obsolete name for nitrogen |
| AZO | accumulation in the blood of nitrogen-bearing waste products (urea) that are usually excreted in the urine |
| AZO | of or involving excess nitrogenous waste products in the urine (usually due to kidney insufficiency) |
| AZO | of or containing nitrogen |
| AZO | excess of urea in the urine |