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Definition of Inhalant

Inhalant: 1. Generally, any breathable chemical vapor.
2. Specifically, a psychoactive substance whose volatile vapors are subject to abuse such as solvents, household and commercial gases, medical anesthetic gases, and nitrites (for example, in antifreeze). See also: Abused inhalant.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=24241
Last Editorial Review: 10/9/2012

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