①focal distance焦点距离，焦距；②fatal dose致死量。现作lethal dose 〔LD〕- hydromyelocele
- hydromyelomeningocele
- hydromyoma
- hydronaphthylamine
- hydronephrosis
- hydronephrotic
- hydronium
- Hydronol
- hydropancreatosis
- hydroparotitis
- hydropenia
- hydropenic
- hydropericarditis
- hydropericardium
- hydroperinephrosis
- hydroperion
- hydroperitoneum
- hydroperitonia
- hydroperoxyeicosatetraenoic acid
- hydropexia
- hydropexic
- hydropexis
- hydrophagocytosis
- hydrophil
- hydrophilia