ACID - Definiția din dicționar
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Ac"id (&unr_;), a. [L.
2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called
&hand_; In certain cases, sulphur, selenium, or tellurium may take the place of oxygen, and the corresponding compounds are called respectively