amyl nitrite

noun Pharmacology.
a yellowish, fragrant, flammable liquid, C 5 H 11 NO 2 , used in medicine chiefly as a vasodilator, especially in the treatment of angina pectoris: misused by inhalation as a stimulant, especially of sexual sensation.
Also called isoamyl nitrite.
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Collins
World English Dictionary
amyl nitrite
 
n
a yellowish unstable volatile fragrant liquid used in medicine as a vasodilator and in perfumes. Formula: (CH3)2CHCH2CH2NO2

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Medical Dictionary

amyl nitrite n.
A volatile yellow liquid used as a vasodilator and as an antidote in cyanide poisoning.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

amyl nitrite

drug once commonly used in the treatment of angina pectoris, a condition characterized by chest pain precipitated by oxygen deficiency in the heart muscle. Amyl nitrite is one of the oldest vasodilators (i.e., agents that expand blood vessels). The drug is useful in treating cyanide poisoning. Amyl nitrite, a clear, pale yellow liquid with a penetrating odour, is administered by inhalation and is very rapidly absorbed from the lungs. Its action is nonspecific; i.e., it affects all smooth muscles, causing them to relax. Side effects include headache, increased heart rate (tachycardia), and low blood pressure (hypotension).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
If sodium nitrite is unavailable, amyl nitrite ampules can be administered by inhalation.
The effect of n-amyl nitrite is larger than that of n-propyl nitrite and t-amyl nitrite.
To protect the user against the unlikely event of exposure to the compound, amyl nitrite is available as an antidote.
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