Word · Frequency #10661
potassium
钾
A light, soft, silver-white metallic element of the alkali metal group; it oxidizes rapidly in air and reacts violently with water.
- 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.
一种柔软、蜡状、银白色的活泼金属,在自然界中从不以游离态存在；原子序数为19、原子量为39.0983的元素。
- 2.
An atom of this element.
该元素的一个原子。
一种柔软、蜡状、银白色的活泼金属,在自然界中从不以游离态存在；原子序数为19、原子量为39.0983的元素。；该元素的一个原子。；钾；[化] 钾K
In use
Bananas are a well-known source of potassium, which helps keep your muscles working properly.
The doctor advised him to eat more foods rich in potassium after his blood test showed a low level.
When potassium reacts with water, it produces hydrogen gas and a lot of heat.
react with sth
描述化学性质时常用一般现在时，主语为不可数名词 potassium，谓语用第三人称单数。
Potassium reacts violently with water.
钾与水剧烈反应。
be high in sth
be high in 表示“富含”，常用于食物、营养成分等语境，后接物质名词。
Bananas are high in potassium.
香蕉富含钾。
a good source of sth
a source of 后接物质名词，表示“……的来源”，可用 rich、excellent 等修饰 source。
Connections
Collocations
- potassium chloride
- 氯化钾
- The doctor prescribed potassium chloride to restore her electrolyte balance.医生开了氯化钾来恢复她的电解质平衡。
- potassium deficiency
- 缺钾
- Muscle weakness can be a sign of potassium deficiency.肌肉无力可能是缺钾的迹象。
- potassium levels
- 钾含量
- The blood test showed normal potassium levels.血液检查显示钾含量正常。
- high-potassium foods
- 高钾食物
- Bananas are a well-known high-potassium food.香蕉是众所周知的高钾食物。
- potassium permanganate
- 高锰酸钾
- Potassium permanganate is used to treat some skin conditions.高锰酸钾用于治疗某些皮肤病。
- potassium supplement
Learner notes
Memory Tip
potassium 可拆成 pot + assium：想象锅（pot）里装着软金属钾，遇水会剧烈反应，牢记钾的符号 K。
Context & Register
语域：mixed 常见场景：chemistry、nutrition、medicine potassium 是化学元素术语，在化学、医学文献中较正式，但日常谈论食物营养时也会用到，语体视语境切换。
Pronunciation & Spelling
No common English word rhymes perfectly with potassium /pəˈtæsiəm/. Calcium /ˈkælsiəm/ is the closest: it shares the stressed vowel /æ/ and the final /siəm/ sound, but adds an /l/, so it is only a near rhyme. Cesium /ˈsiːziəm/ and magnesium /mæɡˈniːziəm/ end in -sium but are pronounced with /ziəm/, not /siəm/. Lithium /ˈlɪθiəm/ and sodium /ˈsoʊdiəm/ share only the unstressed -ium ending. Potato /pəˈteɪtoʊ/ starts like potassium but has a different vowel and ending.
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.