Edema
Accumulation of an excessive amount of fluid (plasma) in tissues.
 

Emetic
A substance that causes vomiting, given to expel toxins.
 

Emmenagogue
A substance to stimulate blood flow in the pelvic area and uterus that facilitates and regularizes menstrual flow.  (avoid in pregnancy)
 

Emollient
Softens and soothes inflamed tissue; softens and protects the skin.
 

Enervate
To deprive of strength, vigor, etc.; to weaken physically and mentally.
 

Enteritis
Inflammation of the small intestine.
 

Epstein-Barr Virus
The herpes virus that causes infectious mononucleosis and is associated with Burkitt's lymphoma and nasopharyngeal cancer.
 

Estrogen
Hormone secreted by the ovaries that exerts female sexual characteristics including a woman's menstrual cycle.
 

Expectorant
Encourages the loosening and expulsion of phlegm from the respiratory tract.