any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
street name for lysergic acid diethylamide
harsh or corrosive in tone; an acerbic tone piercing otherwise flowery prose; a barrage of acid comments; her acrid remarks make her many enemies; bitter words; blistering criticism; caustic jokes about political assassination, talk-show hosts and medical ethics; a sulfurous denunciation; a vitriolic critique
being sour to the taste
having the characteristics of an acid; an acid reaction'