| ACID | • acid adj. Sour, sharp, or biting to the taste; tart; having the taste of vinegar. • acid adj. (Figuratively) Sour-tempered. • acid adj. Of or pertaining to an acid; acidic. |
| DIACID | • diacid n. (Chemistry) Any dibasic acid. • DIACID n. a type of chemical compound having two replaceable hydrogen atoms. |
| PLACID | • placid adj. Calm and quiet; peaceful; tranquil. • PLACID adj. calm in nature. |
| ANTACID | • antacid n. An agent that counteracts or neutralizes acidity, especially in the stomach. • antacid adj. Counteracting or neutralizing acidity, especially in the stomach. • ANTACID n. a remedy for indigestion. |
| MONACID | • monacid adj. (Chemistry) Having one hydrogen atom replaceable by a negative or acid atom or radical; capable of neutralizing… • monacid n. (Chemistry) A substance of this kind. • MONACID n. a compound having one hydrogen atom replaceable by a negative or acid atom or radical, also MONOACID. |
| NONACID | • nonacid adj. Having no acidic properties or content. • nonacid n. A substance that is not an acid. • NONACID n. a substance that is not an acid. |
| OXYACID | • oxyacid n. (Chemistry) An acid containing oxygen, as opposed to a hydracid. • OXYACID n. an acid that contains oxygen. |
| PERACID | • peracid n. (Chemistry) Any acid that contains a peroxy group - e.g. peracetic acid. • peracid n. (Inorganic chemistry) The oxyacid of a particular element that has the largest number of oxygen atoms… • PERACID n. a type of acid. |
| SUBACID | • subacid adj. Somewhat acidic. • subacid n. A mild acidic taste. • subacid n. Any substance that is moderately acid. |
| TRIACID | • triacid adj. (Chemistry, of a base) Capable of combining with three molecules of a monobasic acid. • triacid n. (Chemistry) Any tribasic acid. • TRIACID n. a type of acid compound. |
| CHARACID | • characid n. (Zoology) Any fish in the family Characidae. • CHARACID n. any carnivorous freshwater fish of the family Characidae, which includes the pirana, also CHARACIN. |
| HYDRACID | • hydracid n. (Chemistry) An acid that does not contain any oxygen as opposed to an oxyacid; they are all binary compounds… • HYDRACID n. an oxygenless acid. |
| HYPOACID | • hypoacid adj. Hypoacidic. • HYPOACID adj. having a lower than normal degree of acidity. |
| MONOACID | • monoacid n. (Chemistry) Any acid that has only one replaceable hydrogen ion. • MONOACID n. a compound having one hydrogen atom replaceable by a negative or acid atom or radical, also MONACID. |
| POLYACID | • polyacid n. (Chemistry) Any polybasic acid. • polyacid adj. (Chemistry, of a base) polybasic. • POLYACID n. a compound made up of two or more hydroxyl groups. |
| TETRACID | • tetracid adj. (Obsolete, chemistry) tetrabasic. • tetracid n. A tetracarboxylic acid. • TETRACID n. a substance capable of neutralizing four molecules of a monobasic acid. |
| HYPERACID | • hyperacid adj. Highly acidic. • HYPERACID adj. excessively acid. |
| PSEUDOACID | • PSEUDOACID n. a compound which is not an acid but which is isomeric with and transformable into an acid. |