ENGLISH
REFERENCE

alkali

n.
C1 Advanced US //ˈæɫkəˌɫaɪ// UK //ˈælkəlˌaɪ// al·ka·li

n. a substance that can neutralize an acid. It is usually a base that can react with acids to form salt and water.

n. a substance that can neutralize an acid, typically a base that reacts with acids to form a salt and water. In a broader sense, it refers to any base or a solution containing one.


SIMPLE

Lemon juice is an acid, while baking soda is an alkali.

CONTEXTUAL

The soil was too acidic for the crops, so the farmer added lime, a natural alkali, to balance the pH.

COMPLEX

In the laboratory, the technician carefully measured the alkali to ensure the neutralization reaction occurred without producing excessive heat or gas.

Synonyms
Origin

From French alcali, from Medieval Latin alcali, ultimately from Arabic اَلْقِلْي (al-qily, “alkali, ashes of the saltwort”), related to قَلَى (qalā, “to roast in a pan, fry”).

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