| Subject | English | Thesaurus |
| abbr., commun. | C/N | carrier/noise ratio |
| Nasdaq, abbr. | F N B Financial Services Corporation | FNBF |
| st.exch., abbr. | M B N A Corporation options | VZK |
| st.exch., abbr. | Madge Networks, N. V. options | VKM |
| abbr., commun. | N-ACK | negatively acknowledged |
| abbr., med. | N-CAP | Nurses Coalition for Action in Politics |
| abbr., med. | N-CAP | Nifedipine Gastrointestinal Therapeutic System Circadian Anti-Ischemic Program |
| ed., mater.sc. | N ew European Programme for Technology Utilization in Education | New European Programme for Technology Utilization in Education |
| abbr., commun. | N/W | network |
| abbr., file.ext. | Structured N-Dimensional Application Program Interface | SNAPI (Oracle) |
