Definitions for Potassiumpəˈtæs i əm

This page provides all possible meanings and translations of the word Potassium

Random House Webster's College Dictionary

po•tas•si•umpəˈtæs i əm(n.)

  1. a silvery white metallic element that oxidizes rapidly in the air and whose compounds are used as fertilizer and in special hard glasses.

    Category: Chemistry

    Ref: Symbol: K; 3 2

Origin of potassium:

1800–10; < NL potass(a) (< F potasse < D potaschpotash ) + -ium -ium2

Princeton's WordNet

  1. potassium, K, atomic number 19(noun)

    a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

Wiktionary

  1. potassium(Noun)

    A soft, waxy, silvery reactive metal that is never found unbound in nature; an element (symbol K) with an atomic number of 19 and atomic weight of 39.0983. The symbol is derived from the Latin kalium.

  2. Origin: From potassa + -ium.

Webster Dictionary

  1. Potassium(noun)

    an Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium)

Freebase

  1. Potassium

    Potassium is a chemical element with symbol K and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction and burning with a lilac flame. Because potassium and sodium are chemically very similar, their salts were not at first differentiated. The existence of multiple elements in their salts was suspected from 1702, and this was proven in 1807 when potassium and sodium were individually isolated from different salts by electrolysis. Potassium in nature occurs only in ionic salts. As such, it is found dissolved in seawater, and is part of many minerals. Most industrial chemical applications of potassium employ the relatively high solubility in water of potassium compounds, such as potassium soaps. Potassium metal has only a few special applications, being replaced in most chemical reactions with sodium metal. Potassium ions are necessary for the function of all living cells. Potassium ion diffusion is a key mechanism in nerve transmission, and potassium depletion in animals, including humans, results in various cardiac dysfunctions. Potassium accumulates in plant cells, and thus fresh fruits and vegetables are a good dietary source of it. Conversely, most plants except specialist halophytes are intolerant of salt, and sodium is present in them only in low concentration. This resulted in potassium first being isolated from potash, the ashes of plants, giving the element its name. For the same reason, heavy crop production rapidly depletes soils of potassium, and agricultural fertilizers consume 95% of global potassium chemical production.

U.S. National Library of Medicine

  1. Potassium

    An element that is in the alkali group of metals. It has an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte and it plays a significant role in the regulation of fluid volume and maintenance of the water-electrolyte balance.


Translations for Potassium

Kernerman English Multilingual Dictionary

potassium(noun)

a silvery-white element.

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