what is acidic
The adjective ACIDIC has 2 senses: 1. being or containing an acid; of a solution having an excess of hydrogen atoms (having a pH of less than 7). 2. being sour to the taste. Familiarity information: ACIDIC used as an adjective is rare.Dictionary entry details.. being or containing an acid; of a solution having an excess of hydrogen atoms (having a pH of less than 7). 2. being sour to the taste. Familiarity information: ACIDIC used as an adjective is rare.