| Abbreviation | Definition |
|---|---|
| NCD | Nitrogen Chemiluminescence Detectors |
| NCE | New Chemical Entity |
| NCEAC | National center of Excellence in Analytical Chemistry |
| NCEAC | National Centre of Excellence in Analytical Chemistry |
| NCEC | National Chemical Emergency Centre |
| NCEL | New Chemical Exposure Limit |
| NCEL | New Chemical Exposure Limits |
| NCGC | National Chemical Genomics Center |
| NCIP | Nanjing Chemical Industry Park |
| NCL | National Chemical Laboratory |
| NCLI | National Chemical Laboratory for Industry |
| NCM | New Chemical Materials |
| NCR | No Carbon Required |
| NCS | N-chlorosuccinimide |
| NCT | Narte Certified Technician |
| NCT | New Circuit Test |
| NCTC | National Chemistry Talent Contest |
| NCW | National Chemistry Week |
| NCW | Non-Catalytic Wall |
| Nd | Neodymium |