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Added 10 October 2026

alkaline

/ˈæl.kəl.aɪn/ adjective

First recorded: 1677 Wiktionary

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about alkaline at Wordnik → Where our words come from →

Of, or relating to an alkali, one of a class of caustic bases.
Having a pH greater than 7.

noun

An alkaline battery.

Origin

First attested in 1677. From alkali + -ine, ultimately from Arabic اَلْقِلْي (al-qily, “alkali, ashes of the saltwort”), related to قَلَى (qalā, “to roast in a pan, fry”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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