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Từ điển WordNet v3.1 - WordNet Dictionary
alkali


noun
1. any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water (Freq. 3)
- bases include oxides and hydroxides of metals and ammonia
Syn:
base
Derivationally related forms:
alkalize, alkalify, base (for: base), basify (for: base)
Hypernyms:
compound, chemical compound
Hyponyms:
pyridine, purine, imidazole, iminazole, glyoxaline,
melamine, cyanuramide, pyrimidine
2. a mixture of soluble salts found in arid soils and some bodies of water;
detrimental to agriculture
Derivationally related forms:
alkalic, alkalify
Hypernyms:
salt

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