nitric

nitric /ni·tric/ (ni´trik) pertaining to or containing nitrogen in one of its higher valences.

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nitric oxide  endothelium-derived relaxing factor; a naturally occurring gas that in the body is a short-lived dilator substance released from vascular endothelial cells in response to the binding of vasodilators; it inhibits muscular contraction and produces relaxation, and is toxic in the central nervous system. A preparation is used in the treatment of persistent fetal circulation in term and near-term neonates.

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nitric

pertaining to or containing nitrogen in one of its higher valences.

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nitric acid

a highly caustic, fuming acid that has a characteristic choking odor. It was used at one time in the immediate treatment of rabid animal bites to prevent rabies becoming established, and as a cauterizing agent in the eradication of various kinds of warts. It is also used in the form of its potassium and sodium salts. It can be fatal if swallowed, and large amounts of nitric acid applied to the skin can cause necrosis. The antidote for nitric acid poisoning is an alkali or sodium bicarbonate applied liberally.

nitric oxide

is produced during the ensiling process and animals in confined spaces and exposed to silo gas may develop severe respiratory disease due to irritation of the alveolar epithelium. Called also silo-filler's disease. See also atypical interstitial pneumonia.