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alkali
Definitions
[ˈalkəlʌɪ], (Noun)
Definitions:
- a compound with particular chemical properties including turning litmus blue and neutralizing or effervescing with acids; typically, a caustic or corrosive substance of this kind such as lime or soda
(e.g: flint is not subject to chemical weathering except by strong alkalis)
Phrases:
Origin
:
late Middle English (denoting a saline substance derived from the ashes of various plants, including glasswort): from medieval Latin, from Arabic al-qalī ‘calcined ashes (of the glasswort etc.)’, from qalā ‘fry, roast’
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definition by Oxford Dictionaries