acidic
Of or relating to acid; having the character of an acid.
Other meanings
Having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red.
Containing a high percentage of silica-bearing minerals.
Where this comes from
This definition is adapted from “acidic” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.