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

traces of acid

a molecule or other species which can donate a proton or accept an electron pair in reactions

the drug LSD

she didn't have a clue the sweet had acid in it

a bad acid trip

containing acid or having the properties of an acid; having a pH of less than 7

acid soils

sharp-tasting or sour

acid fruit

(of rock, especially lava) containing a relatively high proportion of silica

the magma may start off fairly basic and end up at the close of the eruption much more acid