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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.

See Examples For:

And he has seen them descend on Mono Lake when the water is teeming with brine shrimp and the larvae and pupae of alkali flies.

From Los Angeles Times ● Aug. 22, 2025

This process combines fats or oils with an alkali to produce soap.

From BBC ● May 31, 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

He drifted past saguaros and alkali flats, camped beneath escarpments of naked Precambrian stone.

From "Into the Wild" by Jon Krakauer

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

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

It is saponified by alkalies, with reproduction of soluble gum.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" by Various

Among the chemical we note the action of acids and alkalies upon metals.

From Electric Bells and All About Them A Practical Book for Practical Men by S. R. Bottone

Glu′coside, any of those vegetable products which, on treatment with acids or alkalies, yield a sugar or some closely allied carbohydrate; Glucosūr′ia, the presence of glucose in the urine.

From Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) 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

More benefit, however, appears to be derived from potassium iodide, guaiacum, the alkalis potash and lithia, and from the administration of aspirin and sodium salicylate.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" by Various


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