| Term | Full Form | Definition | Meaning |
|---|---|
| N | North |
| N | Nitrogen |
| N | Newton |
| N | No |
| n | noun |
| N | Natural Numbers |
| n | nano |
| n | principal quantum number |
| N | Asparagine |
| N | Neutron number |
| n | coordination number |
| N | Normality |
| N | Neill |
| N | Namyang/Nürburgring |
| n | amount of substance |
| N/A | Not Available |
| N4BB | News for BlackBerrys |
| N4G | News for Gamers |
| NA | Namibia |
| NA | Not Applicable |
| Na | Sodium |
| NA | Naturally Aspirated |
| NA | North American Airlines |
| NA | Avogadro number |
| NA | Nigerian Army |