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单词 potassium
释义

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potassium

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potassium

(pətæsiəm)
uncountable noun
Potassium is a soft silvery-white chemical element, which occurs mainly in compounds. These compounds are used in making such things as glass, soap, and fertilizers.

potassium in British English

(pəˈtæsɪəm)
noun
a light silvery element of the alkali metal group that is highly reactive and rapidly oxidizes in air; occurs principally in carnallite and sylvite. It is used when alloyed with sodium as a cooling medium in nuclear reactors and its compounds are widely used, esp in fertilizers. Symbol: K; atomic no: 19; atomic wt: 39.0983; valency: 1; relative density: 0.862; melting pt: 63.71°C; boiling pt: 759°C
Derived forms
potassic (poˈtassic)
adjective
Word origin
C19: New Latin potassa potash

potassium in American English

(pəˈtæsiəm)
noun
a soft, silver-white, waxlike metallic chemical element, one of the alkali metals, that oxidizes rapidly when exposed to air: it occurs abundantly in nature in the form of its salts, which are used in fertilizers, glass, etc.: symbol, K; at. no., 19
Derived forms
potassic (poˈtassic)
adjective
Word origin
ModL: so named (1807) < potassa < Du potasch, potash, by Humphrey Davy, who first isolated it from potash

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potassium

picture of potassium
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Examples of 'potassium' in a sentence
potassium

These examples have been automatically selected and may contain sensitive content.Read more…
Cocoa contains antioxidants as well as iron, potassium and zinc.
Times, Sunday Times (2016)
Cocoa contains antioxidants as well as iron, potassium and zinc.
Times, Sunday Times (2016)
Anyone taking steroid drugs should ensure that the diet is well supplied with calcium and potassium rich foods.
Martlew, Gillian & Silver, Shelley (ed) The Medicine Chest - your family's guide to prescription drugs (1988)
These will replace essential sodium and potassium, as well as fluid.
The Sun (2008)
They have more iron, magnesium and potassium.
Times, Sunday Times (2015)
It also contains traces of minerals including potassium, iron and calcium.
Times, Sunday Times (2016)
It also contains potassium, which helps control your salt cravings.
The Sun (2012)
Salt changes the balance of sodium and potassium in your blood, which raises your blood pressure.
Times, Sunday Times (2014)
It is linked with other minerals, in particular calcium and potassium.
Budd, Martin Diets to Help Diabetes (1983)
A lack of potassium or sodium can cause muscle weakness.
Kowalski, Robert E The 8-Week Cholesterol Cure (1990)
They make an important contribution to the intake of vitamin C and potassium.
The Sun (2016)
Most of the vitamin C and potassium is found in the middle.
Times, Sunday Times (2014)
It also gives us vitamin C and potassium for a healthy heart.
The Sun (2010)
It is a source of minerals including calcium, magnesium, iron and potassium.
Mayes, Adrienne The Dictionary of Nutritional Health (1986)
Yes, bananas contain potassium, which is slightly radioactive.
Times, Sunday Times (2016)
Just two tablespoons contain a huge helping of potassium, calcium and omega-3 fat.
The Sun (2011)
But GPs warned the fruit contains potassium - and too much can spark a heart attack.
The Sun (2009)
It is a brilliant way of getting protein, fat, calcium and potassium.
Times, Sunday Times (2010)
Their naturally antiseptic properties are said to help kill bacteria, while minerals including potassium and magnesium help reduce inflammation and clean out mucus blocking the airways.
The Sun (2013)
Then she sets them to work, recording its chemical symbol, appearance and properties and comparing them to sodium and potassium.
Times, Sunday Times (2011)
It is high in vitamin A, magnesium and potassium.
Times, Sunday Times (2007)
Not only is it rich in calcium, magnesium and potassium, nettle tea can also help the body to flush out any excess fluids.
The Sun (2015)

Word lists with
potassium

chemical

In other languages
potassium

British English: potassium NOUN
Potassium is a chemical element that occurs mainly in compounds. These compounds are used in making such things as glass, soap, and fertilizers.
  • American English: potassium
  • Brazilian Portuguese: potássio
  • Chinese: 钾
  • European Spanish: potasio
  • French: potassium
  • German: Kalium
  • Italian: potassio
  • Japanese: カリウム
  • Korean: 포타슘
  • European Portuguese: potássio
  • Latin American Spanish: potasio

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All related terms of 'potassium'

potassium alum
Chemistry alum 1 (sense 1 )
potassium bromide
a white crystalline soluble substance with a bitter saline taste used in making photographic papers and plates and in medicine as a sedative . Formula: KBr
potassium chlorate
a white crystalline soluble substance used in fireworks , matches , and explosives , and as a disinfectant and bleaching agent . Formula: KClO 3
potassium chloride
a white soluble crystalline substance used as a fertilizer and in medicine to prevent potassium deficiency . Formula: KCl
potassium cyanide
a white poisonous granular soluble solid substance used in photography and in extracting gold from its ores . Formula: KCN
potassium iodide
a transparent , crystalline salt, KI, available also as a white, granular powder, used as a feed additive and in medicine, photography , etc.
potassium nitrate
a colourless or white crystalline compound used in gunpowders , pyrotechnics , fertilizers , and as a preservative for foods, esp as a curing salt for ham , sausages , etc ( E252 ). Formula: KNO 3
potassium sulfate
a white, crystalline solid, K 2 SO 4 , used in fertilizers , medicine , etc.
potassium sulphate
a soluble substance usually obtained as colourless crystals of the decahydrate: used in making glass and as a fertilizer . Formula: K 2 SO 4
potassium bitartrate
→ cream of tartar
potassium carbonate
a white odourless substance used in making glass and soft soap and as an alkaline cleansing agent . Formula: K 2 CO 3
potassium dichromate
an orange-red crystalline soluble solid substance that is a good oxidizing agent and is used in making chrome pigments and as a bleaching agent. Formula: K 2 Cr 2 O 7
potassium ferrocyanide
a yellow soluble crystalline compound used in case-hardening steel and making dyes and pigments . Formula: K 4 Fe(CN) 6
potassium hydroxide
a white deliquescent alkaline solid used in the manufacture of soap , liquid shampoos , and detergents . Formula: KOH
potassium permanganate
a dark purple poisonous odourless soluble crystalline solid , used as a bleach , disinfectant , and antiseptic . Formula: KMnO 4
potassium phosphate
any of the three orthophosphates of potassium ( potassium monophosphate ( K 2 HPO 4 ), potassium diphosphate (KH 2 PO 4 ), and tripotassium phosphate (K 3 PO 4 ))
potassium-argon dating
a technique for determining the age of minerals based on the occurrence in natural potassium of a small fixed amount of radioisotope 40 K that decays to the stable argon isotope 40 Ar with a half-life of 1.28 × 10 9 years. Measurement of the ratio of these isotopes thus gives the age of the mineral
potassium manganate(VII)
a dark purple poisonous odourless soluble crystalline solid, used as a bleach , disinfectant , and antiseptic . Formula: KMnO 4
antimony potassium tartrate
a colourless odourless poisonous crystalline salt used as a mordant for textiles and leather , as an insecticide , and as an anthelmintic . Formula: K (SbO)C 4 H 4 O 6
potassium hydrogen tartrate
a colourless or white soluble crystalline salt used in baking powders , soldering fluxes , and laxatives . Formula: KHC 4 H 4 O 6
potassium hexacyanoferrate (II)
a yellow soluble crystalline compound used in case-hardening steel and making dyes and pigments . Formula: K 4 Fe(CN) 6
nitre
a colourless or white crystalline compound used in gunpowders , pyrotechnics , fertilizers , and as a preservative for foods, esp as a curing salt for ham , sausages , etc ( E252 ). Formula: KNO 3
yellow prussiate of potash
a yellow soluble crystalline compound used in case-hardening steel and making dyes and pigments . Formula: K 4 Fe(CN) 6
alum
a colourless soluble hydrated double sulphate of aluminium and potassium used in the manufacture of mordants and pigments , in dressing leather and sizing paper , and in medicine as a styptic and astringent . Formula: K 2 SO 4 .Al 2 (SO 4 ) 3 .24 H 2 O
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更新时间：2024/12/22 21:35:13