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  1. Dictionary
    acid
    /ˈasɪd/

    noun

    • 1. a substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind. "trees were exposed to mixtures of heavy metals, acids, and overdoses of nutrients"
    • 2. a molecule or other species which can donate a proton or accept an electron pair in reactions.

    adjective

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