Main Entry: ¹ac·id

Pronunciation: \ˈas-əd\

Function: adjective

1 : sour, sharp, or biting to the taste
2 a : of, relating to, or being an acid ; also : having the reactions or characteristics of an acid <an acid solution> b of salts and esters : derived by partial exchange of replaceable hydrogen <acid sodium carbonate NaHCO₃> c : marked by or resulting from an abnormally high concentration of acid <acid indigestion>—not used technically