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Nitrogen   Listen
noun
Nitrogen  n.  (Chem.) A colorless nonmetallic element of atomic number 7, tasteless and odorless, comprising four fifths of the atmosphere by volume in the form of molecular nitrogen (N2). It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name azote still used by French chemists); but it forms many important compounds, such as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organized living tissues, animal or vegetable. Symbol N. Atomic weight 14.007. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of Paris, and Pictet of Geneva, and boils at -195.8 ° C at atmospheric pressure. Liquid nitrogen is used as a refrigerant to store delicate materials, such as bacteria, cells, and other biological materials.






Collaborative International Dictionary of English 0.48








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"Nitrogen" Quotes from Famous Books



... lubricating and illuminating purposes, and for making soaps, paints, pomades and other toilet articles. Oil cakes made from the fiber of the seeds after the oil has been expressed are excellent food for cattle, being rich in nitrogen, and the young seedlings, which are removed at the first weeding of the crop, are sold in the markets for salad and are very popular with ...
— Modern India • William Eleroy Curtis

... basis of life is called protoplasm. It contains three kinds of chemical compounds known as the proteins, carbohydrates, and hydrocarbons. Proteins are invariably present in living cells, and are made up of carbon, hydrogen, nitrogen, sulphur, and usually a little phosphorus. The elements are also combined in a very complex chemical way. For example, the substance called haemoglobin is the protein which exists in the red blood cells and which causes those cells to appear light red or yellow ...
— The Doctrine of Evolution - Its Basis and Its Scope • Henry Edward Crampton

... by the burning. "To the child of nature all hurtful things are repulsive, all beautiful things attractive," As to flesh formers, it had been noted that all foods useful in repairing bodily waste contain the element nitrogen. Alcohol contains no nitrogen, and so could not be classed among body builders. The chief body warmer is sugar. Alcohol being a product of sugar, people were all misled for years into thinking that it does in some kind and degree ...
— The Use and Need of the Life of Carry A. Nation • Carry A. Nation

... was impossible to determine the molecular weight, he could not say what the gas was, save that the empirical formula was C{62}TH H{39}O{27}N{5}. It broke down at a temperature of only 89 deg. centigrade. The gases left consisted largely of methane, nitrogen, and methyl ether. Dick is still in the dark as to what the gas is." He paused, then ...
— The Black Star Passes • John W Campbell

... propose," the Governor declared dramatically, "to take nitrogen from the air and sell it ...
— The Fighting Shepherdess • Caroline Lockhart

... A short time after this I made a more unexpected and astonishing discovery. I found that this complex and hitherto misunderstood gas could, under the influence of certain high-frequency electrical discharges, be made to combine with explosive violence with the nitrogen of the atmosphere, leaving only a harmless residue. We wired the surrounding region for the electrical discharge and, with a vast explosion of weird purple flame, cleared the whole area of the century-old curse. Our laboratory was destroyed ...
— City of Endless Night • Milo Hastings

... is very appropriate in one country is improper in another; thus, as we advance from the equator towards the poles, the necessity for animal food becomes greater, till, in the very north, it is the sole article of subsistence. Animal food, from containing nitrogen, is more stimulating, and, therefore, less suitable for hot climates, where, on the contrary, saccharine, mucilaginous, and starchy materials are preferred; hence, in the zone of the tropics, we find produced in abundance rice, maize, millet, sago, salep, arrowroot, potatoes, the bread-fruit, ...
— The Church of England Magazine - Volume 10, No. 263, January 9, 1841 • Various

... he is still uncertain as to whether he be carnivorous or frugivorous. His intellect misleads his instinct. It was only yesterday that he learned that he had probably erred hitherto in the choice of his nourishment; that he must reduce by two-thirds the quantity of nitrogen he absorbs, and largely increase the volume of hydrocarbons; that a little fruit, or milk, a few vegetables, farinaceous substances—now the mere accessory of the too plentiful repasts which he works so hard to provide, which are his chief object in life, the goal of his efforts, ...
— The Buried Temple • Maurice Maeterlinck

... is that while oxygen and nitrogen in the upper reaches of the atmosphere can block out solar ultraviolet photons with wavelengths shorter than 2,420 angstroms (A), ozone is the only effective shield in the atmosphere against solar ultraviolet radiation ...
— Worldwide Effects of Nuclear War: Some Perspectives • United States Arms Control and Disarmament Agency

... the power to manufacture protein from less complex bodies; that of animal-life, the absence of such power." He finds that in form, in the presence of starch, of chlorophyl, in power of locomotion, in the presence of circulatory organs, of the body called nitrogen, in the functions of respiration and sensation, there are no diagnostic characters. He finds, however, "fairly constant and well-marked distinctions" in the presence of a cellulose coat in the plant-cell, ...
— Scientific American Supplement, No. 508, September 26, 1885 • Various

... a short time if exposed to the atmosphere. The carbonaceous elements are different in this respect. When pure starch, sugar, or fat is exposed to the air in a moistened state, they exhibit the very little tendency to change or decay. Yet if placed in contact with decomposing substances containing nitrogen, they soon begin to change, and are themselves decomposed and destroyed. This communication of the condition of change from one class of substances to another, is termed fermentation. If a fermenting substance be added to a watery solution containing sugar, ...
— Science in the Kitchen. • Mrs. E. E. Kellogg

... have on liquid air, nitrogen extraction from the atmosphere, and so on. Understand? And come ...
— The Air Trust • George Allan England

... a large quantity of nitrogen, which is one of the most powerful elements in nutrition; on the other hand, beef tea may be chosen as an illustration of great nutrient power in sickness, co-existing with a very small ...
— Notes on Nursing - What It Is, and What It Is Not • Florence Nightingale

... promptly. "Just logged her a few minutes ago." He poured hastily through a dog-eared index. "Here it is: 'N-127, atmosphere unbreathable; largely nitrogen, oxygen insufficient to support human life; no animal life reported; insects, large but reported non-poisonous; vegetation heroic in size, probably with edible fruits, although reports are incomplete on this score; water unfit for drinking purpose ...
— Vampires of Space • Sewell Peaslee Wright



Words linked to "Nitrogen" :   air, nitrogenize, nitrogen-fixing, nitrogen-bearing, element, nitrogen cycle, nitrogen narcosis, azote, nitrify, nitrogen trichloride, nitrogenous, chemical element



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