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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.

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Lynn Boulton, the Sierra Club’s local conservation chair, walked along a dirt road to what was once a marshy alkali meadow.

From Los Angeles Times Oct. 18, 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

Because a vanadium peroxide molecule is negatively charged, it needed alkali cations for charge balance, Nyman said, and the researchers used potassium, rubidium and cesium alkali cations for this study.

From Science Daily Feb. 12, 2024

The BBC's Mark Easton has been asking Commander Jon Savell about why it's taking time to find the alleged Clapham alkali attacker.

From BBC Feb. 5, 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

Pots, pans, vats, machines exposed to corrosives will be protected by a skin of aluminum, metal highly resistant to mos.t acids and alkalies.

From Time Magazine Archive

The manifold minerals, metals, oxides, acids, and alkalies are used in a variety of ways by the modern chemical potter.

From Pottery, for Artists Craftsmen & Teachers by Cox, George J.

Turmeric, tur′mėr-ik, n. the rhizome or root-stock of Curcuma longa, a handsome herbaceous plant cultivated all over India, its yellowish tubers yielding a deep-yellow powder used as a chemical test for the presence of alkalies.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

It will be sufficient for our purpose just now to know that acids have a sour taste and that alkalies counteract acids.

From Household Administration Its Place in the Higher Education of Women by Various

Substances are classified for chemical purposes in groups, every member of which exhibits the same chemical property, and we shall require to distinguish between the group called acids and the group called alkalies.

From Household Administration Its Place in the Higher Education of Women by Various

In addition, the scientists substituted ammonium and tetramethyl ammonium, the former of which is mildly acidic, for the alkalis.

From Science Daily Feb. 12, 2024

Fermenting encompasses a range of processes through which microorganisms — yeasts, molds, bacteria — break down compounds in food to create alcohols, acids or alkalis, which in turn prevent the growth of harmful pathogens.

From Salon Dec. 6, 2023

Coal provided the power; the nascent chemical industry supplied the acids and alkalis essential to these enterprises.

From Nature Aug. 30, 2020

Alkalis were extracted from ashes, and soaps were prepared by combining these alkalis with fats.

From Textbooks Feb. 14, 2019

Another test, and more accurate, is, that acids change the blue juices of vegetables red, and alkalis turn the syrup of violets green.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph




Vocabulary lists containing alkali


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