Lexic.us

Definition of Magnesium

1. Noun. A light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine).

Definition of Magnesium

1. n. A light silver-white metallic element, malleable and ductile, quite permanent in dry air but tarnishing in moist air. It burns, forming (the oxide) magnesia, with the production of a blinding light (the so-called magnesium light) which is used in signaling, in pyrotechny, or in photography where a strong actinic illuminant is required. Its compounds occur abundantly, as in dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight, 24.4. Specific gravity, 1.75.

Definition of Magnesium

1. Noun. A light, flammable, silvery metal, and a chemical element (''symbol'' Mg) with an atomic number of 12. ¹

¹ Source: wiktionary.com

Definition of Magnesium

1. [n -S]

Medical Definition of Magnesium

1. An essential divalent cation. The major role is as the chelated ion in ATP and presumably other triphosphonucleotides. The magnesium ATP complex is the sole biologically active form of ATP. The other essential role of magnesium is as the central ion of chlorophyll. Cellular concentration is less than 5mM. Serum concentration approximately 1mM. Pharmacologic action: Hypomagnesemia can cause refractory ventricular fibrillation or ventricular tachycardia. Uses: known hypomagnesemic states - suspect hypomagnesmia in alcoholics, chronic disease states, or others with poor nutrition; treatment of choice for Torsade de Pointes. Dose: 1-2 grams IV push for cardiac arrest, over 1 to 2 minutes for Torsades, and over 5 to 60 minutes for acute myocardial infarction. Potential complications: Transient flushing and diaphoresis, sinus bradycardia, hypotension, hyporeflexia and paralysis with overdose. Abbreviation: Mg (15 Mar 2000)

Lexicographical Neighbors of Magnesium

Literary usage of Magnesium

Below you will find example usage of this term as found in modern and/or classical literature:

1. Standard Methods of Chemical Analysis: A Manual of Analytical Methods and by Wilfred Welday Scott (1922)
"Upon ignition of the precipitate, magnesium pyrophosphate ... The neutral or slightly acid solution, containing magnesium in presence of ammonium salts, ..."

2. Proceedings of the Society for Experimental Biology and Medicine (1903)
"I. The changes in the quantity of magnesium reabsorbed or secreted at various levels of ... Symbols below the zero line denote the magnesium secretion. ..."

3. Chemical Abstracts by American Chemical Society (1915)
"magnesium calcium carbonate (Schmidt) 2858. magnesium carbonate, systems: ... magnesium phosphate, interaction between acid phosphates and carbonates, ..."

4. Analytical Chemistry by Frederick Pearson Treadwell (1921)
"magnesium compounds are found very abundantly in nature. ... Thus almost all the minerals of the olivine group contain more or less magnesium. ..."

5. Journal of the American Chemical Society by American Chemical Society (1903)
"Received January 3*. i9<>3- IT has long been known that metallic magnesium acts extremely slowly upon distilled water, and that it practically does not act ..."

6. Manual of Qualitative Chemical Analysis by C. Remigius Fresenius, Samuel William Johnson (1883)
"Some of the SALTS OP magnesium are soluble in water, others are insoluble in that fluid. The soluble salts have a nauseous bitter taste; thu normal salts do ..."

7. A Dictionary of Applied Chemistry by Thomas Edward Thorpe (1921)
"The calcium sulphate may be between 80-90 pc, magnesium hydroxide 2-5 pc, ... The formation of magnesium hydroxide is probably due to the interaction of the ..."

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