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Definitions

alkaline

[al-kuh-lahyn, -lin] / ˈæl kəˌlaɪn, -lɪn /
ADJECTIVE
being basic, not acid (chemically)
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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PET responded well to the alkaline treatment, but polyethylene and polypropylene initially produced less hydrogen.

From Science Daily ● Jul. 31, 2026

White liquor is an alkaline chemical containing sodium hydroxide and sodium sulfide.

From BBC ● May 26, 2026

The rhenium component helped hydrogen attach to and release from the catalyst surface, while the molybdenum sped up the splitting of water in the alkaline electrolyte.

From Science Daily ● May 18, 2026

“When the Emperor Was Divine” takes place in Utah, in “a city of tar-paper barracks behind a barbed-wire fence on a dusty alkaline plain.”

From The Wall Street Journal ● Feb. 17, 2026

When the soil is too alkaline, which can be thought of as being too sweet, you need to add sulfur.

From "Counting by 7s" by Holly Goldberg Sloan




Vocabulary lists containing alkaline


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