acidic

adjective

• 1having the properties of an acid, or containing acid; having a pH below 7. Often contrasted with alkaline or basic.
• Geology (of rock, especially lava) relatively rich in silica.
• Metallurgy relating to or denoting steelmaking processes involving silica-rich refractories and slags.

• 2sharp-tasting or sour:acidic wine
• (of a person’s remarks or tone) bitter or cutting:the occasional acidic comment
• (of a color) intense or bright:an acidic yellow

• 3of or relating to acid rock or acid house music.