substance

substance is a topic covered in the Taber's Medical Dictionary.

To view the entire topic, please or purchase a subscription.

Taber’s Cyclopedic Medical Dictionary Online + App from F.A. Davis and Unbound Medicine. Find 65,000 medical and nursing definitions. Download to iPhone, iPad, and Android. Explore these free sample topics:

Taber’s Online

-- The first section of this topic is shown below --

(sŭb′stăns)

[L. substantia, being, essence, contents]

1. Material; matter. SEE: 2. Substantia.
3. A chemical or drug.
4. When used in a medicolegal context, a chemical with potential for abuse. A great variety of entities are included: alcohol, nicotine, caffeine, sedatives, hypnotics, anxiolytics, and illicit drugs such as cannabis, heroin, or methamphetamines. Almost any substance may be abused even though its clinical use is approved when used as prescribed.

-- To view the remaining sections of this topic, please or purchase a subscription --