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Definitions

alkali

[al-kuh-lahy] / ˈæl kəˌlaɪ /
NOUN
soluble base; opposite of an acid
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These bacteria produce acid but are weak at generating alkali.

From Science Daily • Jan. 9, 2026

After spending July gorging on the larvae of alkali flies, the birds are gradually departing this month to begin their migration to another saline lake about 6,000 miles away — Laguna Mar Chiquita in Argentina.

From Los Angeles Times • Aug. 22, 2025

The low-carbon seawater then has alkali added to it – to neutralise the acid that was added – and is then pumped back out into a stream that flows into the sea.

From BBC • Apr. 17, 2025

Another Los Angeles Times report on a roundup of immigrants begins by noting, “Human misery was compounded here today by a blistering desert sun and swirls of alkali dust.”

From Salon • Sep. 21, 2024

The way to unlock the niacin in corn is to cook it with an alkali like lime.

From "The Omnivore's Dilemma" by Michael Pollan