🔍 牛津詞典
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典 🎯

檢索以下詞典:
(Mr. Ng 不推薦使用 Google 翻譯!)
最近搜尋:
TOEFL BNC: 13261 COCA: 28494

alkali

1 ENTRIES FOUND:
alkali /ˈælkəˌlaɪ/ noun
plural alkalies or alkalis
alkali
/ˈælkəˌlaɪ/
noun
plural alkalies or alkalis
Learner's definition of ALKALI
chemistry
: a substance that has a bitter taste and that forms a salt when mixed with an acid
[count]
[noncount]
◊ An alkali has a pH of more than 7.碱的pH值大于7。
TOEFL BNC: 13261 COCA: 28494

alkali

noun

al·​ka·​li ˈal-kə-ˌlī How to pronounce alkali (audio)
plural alkalies or alkalis
1
: a soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate
broadly : a substance (such as a hydroxide or carbonate of an alkali metal) having marked basic properties compare base sense 6a
2
3
: a soluble salt or a mixture of soluble salts present in some soils of arid regions in quantity detrimental to agriculture

Example Sentences

Recent Examples on the Web Baking soda is a mild alkali that's effective at dissolving dirt and grease. Alicia Chilton, Better Homes & Gardens, 12 Sep. 2022 Baking soda is a mild alkali that's effective at dissolving dirt and grease. Alicia Chilton, Better Homes & Gardens, 2 Nov. 2020 Don’t use cleaners containing acid, alkali or sodium hypochlorite that will mar, etch, corrode and permanently discolor the laminate surface, says the Formica company. oregonlive, 28 May 2020 Don’t use cleaners containing acid, alkali or sodium hypochlorite that will mar, etch, corrode and permanently discolor the laminate surface, says the Formica company. oregonlive, 20 Mar. 2020 The company, which acquired several area properties from Dow Chemical in 2015, previously announced plans to close its chlor alkali and vinylidene chloride plants in Freeport in 2020 to cut costs. Katherine Feser, Houston Chronicle, 12 Feb. 2020 Don’t use cleaners containing acid, alkali or sodium hypochlorite that will mar, etch, corrode and permanently discolor the laminate surface, says the Formica company. oregonlive, 20 Mar. 2020 Don’t use cleaners containing acid, alkali or sodium hypochlorite that will mar, etch, corrode and permanently discolor the laminate surface, says the Formica company. oregonlive, 20 Mar. 2020 Don’t use cleaners containing acid, alkali or sodium hypochlorite that will mar, etch, corrode and permanently discolor the laminate surface, says the Formica company. oregonlive, 20 Mar. 2020 See More

Word History

Etymology

Middle English, from Medieval Latin, from Arabic al-qili the ashes of the plant saltwort

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of alkali was in the 14th century
TOEFL BNC: 13261 COCA: 28494

👨🏻‍🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
切換為繁體中文
Site Uptime