| Abbreviation | Definition |
|---|---|
| HCIL | Human Computer Interface Laboratory |
| HCS | high content screening |
| HCS | Human Chorionic Somatomammotropin |
| HCSL | Hellenic Complex Systems Laboratory |
| HCT | Hematocrit |
| HCV | hepatitis-C virus |
| HD | distilled mustard |
| HDL | High Density Lipids |
| HDL | High Density Lipoprotein |
| HDL | high-density lipoprotein |
| HEAL | Human Energy Alliance Laboratories |
| HEDb | Hydroethanolic Extract of Dilodendron bipinnatum |
| HEGL | Henmi Education General Laboratory |
| HELL | Human Engineering Life Laboratory |
| HEML | Haptics and Embedded Mechatronics Laboratory |
| HEML | Health Enterprises Medical Laboratory |
| HEPL | Hansen Experimental Physics Laboratory |
| HFL | High Frequency Lysogenization |
| HFL | Hypersonic Flying Laboratory |
| HFOC | High Flow Oxygen Conserver |