sodium nitrate

sodium nitrate

(now historical) Air thought to be charged with nitre. / (chemistry, now historical) Nitric oxide, NO.

sodium nitrate

Alternative spelling of nitroglycerine

(physics) A radioactive isotope of nitrogen, ¹³₇N, having seven protons and six neutrons, and a half-life of less than ten minutes; it is used in positron emission tomography

(physics) A stable isotope of nitrogen, ¹⁵₇N, having seven protons and eight neutrons; it accounts for less than 0.4% of the natural element; it is used in nuclear magnetic resonance spectroscopy

(physics) A stable isotope of nitrogen, ¹⁴₇N, having seven protons and seven neutrons; it accounts for over 99% of the natural element.

(chemistry) A very hard, golden-coloured ceramic material, TiN; used in refractories, alloys, cermets, and semiconductors

One who nitpicks (finds fault in unimportant details).