| Abbreviation | Definition |
|---|---|
| NACB | National Academy Of Clinical Biochemistry |
| NACE | National Americal Corrosion Engineer |
| NACL | Sodium Chloride |
| NACLH2O | Sodium Chloride Water Solution |
| NACU | Nucleic Acid Containing Unit |
| NADH | dihydronicotinamide adenine dinucleotide |
| NADH | Nicotinamide Adenine Dinucleotide - Hydrogen (reduced) |
| NADIA | Nucleic Acid Detection Immuno Assay |
| NADP | nicotinamide adenine dinucleotide phosphate |
| NADP | Nicotinamide Adenosine Dinucleotide Phosphate |
| NADPH | Nicotinamide Adenine Dinucleotide Phosphate Oxidase |
| NAF | Newark Air Force |
| NaF | Sodium fluoride |
| NAI | Net Acid Input |
| NAM | N-AcetylMuramic Acid |
| NANA | N Acetyl Neuraminic Acid |
| NAOCI | Mistaken rendering of NaOCl, the chemical compound sodium hypochlorite. |
| NaOH | Sodium Hydroxide |
| NaP | Sodium Phosphate |
| NAPL | Non-Aqueous Phase Liquid |