| A | B |
|---|
| generic name | chemical name of a drug; name not protected by a trademark |
| genome | the total mass of genetic instruction humans inherit from their parents |
| geriatrics | the study of the aged or old age and treatment of related diseases and conditions |
| halitosis | bad breath |
| hantavirus | a virus spread by contact with rodents (rats and mice) or their excretions |
| helminths | a parasitic worm |
| hematemesis | vomiting of blood |
| hemoptysis | spitting up blood; blood-stained sputum |
| homeostasis | a constant state of natural balance within the body |
| hospice | program designed to provide care for the terminally ill while allowing them to die with dignity |
| hypoxia | without oxygen; a deficiency of oxygen |
| heading | that section of a letter containing the address of the person sending the letter and the date of writing |
