pentaerythritol tetranitrate

noun Chemistry, Pharmacology.

a white, crystalline, water-insoluble, explosive solid, C₅H₈N₄O₁₂, used chiefly as a high explosive and as a vasodilator in treating angina pectoris.

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Also called PETN

Origin:
1920–25

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pentaerythritol tetranitrate is always a great word to know.

So is glacial. Does it mean:

of, pertaining to, or tending to develop into icelike crystals: glacial phosphoric acid

a white, crystalline, slightly water-soluble solid, C3N3(NH2)3, used chiefly in organic synthesis and in the manufacture of resins

Encyclopedia Britannica

Encyclopedia

pentaerythritol tetranitrate

a highly explosive organic compound belonging to the same chemical family as nitroglycerin-i.e., the nitric acid esters of polyalcohols.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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