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The following 4 entries include the term nitric.
nitric acid
noun: a corrosive liquid inorganic acid HNO3 used especially as an oxidizing agent, in nitrations, and in making organic compounds (such as fertilizers, explosives, and dyes)
nitric oxide
noun: a colorless poisonous gas NO formed by oxidation of nitrogen or ammonia that is present in the atmosphere and also in mammals where it is synthesized from arginine and oxygen and acts as a vasodilator and as a mediator of cell-to-cell communication (as between nerve cells) compare nitrous oxide
fuming nitric acid
noun: concentrated nitric acid containing dissolved nitrogen oxides prepared as either a colorless to pale yellow or a red to brown corrosive poisonous liquid and used especially as a nitrating agent and as a powerful oxidizing agent (as in rocket propellants)