| ACIDS | • acids n. Plural of acid. • ACID n. a type of chemical compound. |
| DIACIDS | • diacids n. Plural of diacid. • DIACID n. a type of chemical compound having two replaceable hydrogen atoms. |
| ANTACIDS | • antacids n. Plural of antacid. • ANTACID n. a remedy for indigestion. |
| MONACIDS | • monacids n. Plural of monacid. • MONACID n. a compound having one hydrogen atom replaceable by a negative or acid atom or radical, also MONOACID. |
| NONACIDS | • nonacids n. Plural of nonacid. • NONACID n. a substance that is not an acid. |
| OXYACIDS | • oxyacids n. Plural of oxyacid. • OXYACID n. an acid that contains oxygen. |
| PERACIDS | • peracids n. Plural of peracid. • PERACID n. a type of acid. |
| TRIACIDS | • triacids n. Plural of triacid. • TRIACID n. a type of acid compound. |
| CHARACIDS | • characids n. Plural of characid. • CHARACID n. any carnivorous freshwater fish of the family Characidae, which includes the pirana, also CHARACIN. |
| HYDRACIDS | • hydracids n. Plural of hydracid. • HYDRACID n. an oxygenless acid. |
| MONOACIDS | • monoacids n. Plural of monoacid. • MONOACID n. a compound having one hydrogen atom replaceable by a negative or acid atom or radical, also MONACID. |
| POLYACIDS | • polyacids n. Plural of polyacid. • POLYACID n. a compound made up of two or more hydroxyl groups. |
| TETRACIDS | • tetracids n. Plural of tetracid. • TETRACID n. a substance capable of neutralizing four molecules of a monobasic acid. |
| PSEUDOACIDS | • PSEUDOACID n. a compound which is not an acid but which is isomeric with and transformable into an acid. |