ni·tro·glyc·er·in

[nahy-truh-glis-er-in]
noun Chemistry, Pharmacology.
a colorless, thick, oily, flammable, highly explosive, slightly water-soluble liquid, C 3 H 5 N 3 O 9 , prepared from glycerol with nitric and sulfuric acids: used chiefly as a constituent of dynamite and other explosives, in rocket propellants, and in medicine as a vasodilator in the treatment of angina pectoris.
Also, ni·tro·glyc·er·ine [nahy-truh-glis-er-in, -uh-reen] .
Also called glonoin, glyceryl trinitrate, trinitroglycerin.


Origin:
1855–60; nitro- + glycerin

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Nitroglycerin is always a great word to know.
So is zedonk. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
the offspring of a zebra and a donkey.
Collins
World English Dictionary
nitroglycerine or nitroglycerin (ˌnaɪtrəʊˈɡlɪsəˌriːn, -ˈɡlɪsərɪn) [Click for IPA pronunciation guide]
 
n
Also called: trinitroglycerine a pale yellow viscous explosive liquid substance made from glycerol and nitric and sulphuric acids and used in explosives, and in medicine as a vasodilator. Formula: CH2NO3CHNO3CH2NO3
 
nitroglycerin or nitroglycerin
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

nitroglycerin ni·tro·glyc·er·in or ni·tro·glyc·er·ine (nī'trō-glĭs'ər-ĭn, -trə-)
n.
A thick, pale yellow liquid that is explosive on concussion or exposure to sudden heat, used as a vasodilator in medicine.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
nitroglycerin   (nī'trō-glĭs'ər-ĭn)  Pronunciation Key 
A thick, pale-yellow, explosive liquid formed by treating glycerin with nitric and sulfuric acids. It is used to make dynamite and in medicine to dilate blood vessels. Chemical formula: C3H5N3O9.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The pain usually occurs with activity or emotion, and goes away with rest or a medicine called nitroglycerin.
It was a clock bomb, rather crudely made but fueled by ten gallons of nitroglycerin.
Nitroglycerin decreases blood pressure and opens the blood vessels around the heart, increasing blood flow.
Nitroglycerin is a medicine that helps relax the blood vessels leading to the heart.
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