alkali
One of a class of caustic bases, such as soda, soda ash, caustic soda, potash,…One of a class of caustic bases, such as soda, soda ash, caustic soda, potash, ammonia, and lithia, whose distinguishing characteristics are dissolving in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
» Calcium is not an alkali metal.
Kalzium ist kein Alkalimetall.
Кальций не щелочной металл.
Meaning
2 senses(countable, uncountable)One of a class of caustic bases, such as soda, soda ash, caustic soda, potash, ammonia, and lithia, whose distinguishing characteristics are dissolving in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
Alkali
щёлочьščóločʹ
лугluh
(US, Western, countable, uncountable)Soluble mineral matter, other than common salt, contained in soils of natural waters.
- a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture
- any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
Examples
6 sentencesCalcium is not an alkali metal.
ruКальций не щелочной металл.
deKalzium ist kein Alkalimetall.
Acids react with alkalis.
ruКислоты реагируют со щелочами.
Lithium is an alkali metal.
ruЛитий - щелочной металл.
deLithium ist ein Alkalimetall.
Lithium, sodium, potassium, rubidium, caesium and francium are alkali metals.
ruЛитий, натрий, калий, рубидий, цезий и франций - это щелочные металлы.
Alkalis neutralize acids.
ruЩёлочь нейтрализует кислоту.
deBasen neutralisieren Säuren.
Translations
9 languagesBy meaning 1
By meaning 1
By meaning 1
Origin
From French alcali, from Medieval Latin alcali, ultimately from Arabic اَلْقِلْي (al-qily,From French alcali, from Medieval Latin alcali, ultimately from Arabic اَلْقِلْي (al-qily, “alkali, ashes (in reference to ashes of the saltwort)”), related to قَلَى (qalā, “to roast in a pan, fry”).
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Forms
plural: alkalis / alkaliesSynonyms
1 synonymsAntonyms
1 antonymsWord family
40 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable