potassium

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n. 钾 [化] 钾K

发音

US /pəˈtæsiəm/
IN /pɵˈʈæʃɪəm/

词形变化

potassiums 复数 potassiums

释义与例句

n.
  1. 1.

    A soft, waxy, silvery reactive metal that is never found unbound in nature; an element with atomic number 19 and atomic weight of 39.0983.

    钾

    不可数

    We all need potassium, and green vegetables are a good source.

  2. 2.

    A single atom of this element.

    可数 不可数

    This reaction substitutes a potassium for a sodium.

词汇关系

名词

同义词 1

k

上位词 1

metal

整体词 8

saltwater seawater brine carnallite kainite langbeinite sylvine sylvite

相关短语

potassium nitrate [化] 硝石; 硝酸钾 [医] 硝酸钾 potassium permanganate [化] 高锰酸钾 [医] 高锰酸钾, 过锰酸钾 potassium iodide [化] 碘化钾 [医] 碘化钾 potassium sorbate [化] 山梨酸钾 potassium benzoate [化] 苯甲酸钾 potassium nitrite [化] 亚硝酸钾 [医] 亚硝酸钾 potassium amide potassium chromate [化] 铬酸钾 [医] 铬酸钾 potassium dichromate [化] 重铬酸钾 [医] 重铬酸钾 potassium cyanide [化] 氰化钾 [医] 氰化钾 potassium channel [电] 钾道 potassium feldspar potassium selective electrode potassium niobate potassium chloride [化] 氯化钾 [医] 氯化钾

词源

Coined by British chemist Humphry Davy in 1807, from potassa (a Latinized form of potash) + -ium.

来源：wiktionary