cathartic

adj. of or pertaining to catharsis; serving to purge the bowels (Medicine); purifying, cleansing (also kathartic)

n. purgative agent, laxative (also kathartic)

For other uses, see catharsis (disambiguation) In medicine, a cathartic is a substance which accelerates defecation.This is in contrast to a laxative, which is a substance which eases defecation, usually by softening the stool. It is possible for a substance to be both a laxative and a cathartic. However, agents such as psyllium seed husks increase the bulk of the stool. Cathartics such as sorbitol are sometimes used in response to poisoning.
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Cathartic /ca·thar·tic/ 1. causing emptying of the bowels. 2. an agent that empties the bowels. 3. producing emotional catharsis. [more]Cathartic - Community and Resources

Noun
1. a purging medicine; stimulates evacuation of the bowels
(synonym) purgative, physic, aperient
(hypernym) medicine, medication, medicament, medicinal drug
(hyponym) aloes, bitter aloes
Adjective
1. emotionally purging
(synonym) psychotherapeutic
(similar) healthful
2. emotionally purging (of e.g. art)
(synonym) releasing
(similar) emotional
(classification) art, artistic creation, artistic production
3. strongly laxative
(synonym) evacuant, purgative
(similar) laxative

(n.)
A medicine that promotes alvine discharges; a purge; a purgative of moderate activity.
  

(a.)
Alt. of Catharical