| FLC | family life cycle; fatty liver cell; fetal liver cell; Friend leukemia cell |
|---|---|
| HELP | Hawaii early learning profile; Health Education Library Program; Health Emergency Loan Program; Heal... |
| HL | hairline; hairy leukoplakia; half life; hearing level; hearing loss; heparin lock; histiocytic lymph... |
| HRQOL | health-related quality of life |
| IDLH | immediate danger to life and health |