Definition of Acid

1. Noun. Any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt.

Specialized synonyms: Alcapton, Alkapton, Homogentisic Acid, Arsenic Acid, Cerotic Acid, Hexacosanoic Acid, Chloric Acid, Chlorous Acid, Monobasic Acid, Dibasic Acid, Tribasic Acid, Tetrabasic Acid, Fulminic Acid, Gamma Acid, Hydriodic Acid, Hydrocyanic Acid, Prussic Acid, Hydroxy Acid, Hyponitrous Acid, Lysergic Acid, Manganic Acid, 2-methylpropenoic Acid, Methacrylic Acid, Selenic Acid, Sulfonic Acid, Sulphonic Acid, Titanic Acid, Perchloric Acid, Carboxylic Acid, Aminobenzoic Acid, Aqua Fortis, Nitric Acid, Nitrous Acid, Aqua Regia, Nitrohydrochloric Acid, Barbituric Acid, Malonylurea, Lansoprazole, Prevacid, Boracic Acid, Boric Acid, Boric Acid, Orthoboric Acid, Bromic Acid, Carbamic Acid, Carbolic Acid, Hydroxybenzene, Oxybenzene, Phenol, Phenylic Acid, Carbonic Acid, Chromic Acid, Citric Acid, Cyanamid, Cyanamide, Cyanic Acid, Cyanuric Acid, Ferricyanic Acid, Ferrocyanic Acid, Fluoroboric Acid, Fluosilicic Acid, Hydrofluosilicic Acid, Formic Acid, Fumaric Acid, Gallic Acid, Glyceric Acid, Glycolic Acid, Glycollic Acid, Hydroxyacetic Acid, Hydrobromic Acid, Chlorohydric Acid, Hydrochloric Acid, Hydrogen Chloride, Hydrofluoric Acid, Hydroiodic Acid, Hypochlorous Acid, Iodic Acid, Isocyanic Acid, Itaconic Acid, Maleic Acid, Oxalacetic Acid, Oxaloacetic Acid, Ethanedioic Acid, Oxalic Acid, Oxyacid, Oxygen Acid, Pantothen, Pantothenic Acid, Paba, Para Aminobenzoic Acid, Pectic Acid, Permanganic Acid, Phthalic Acid, Picric Acid, Pyruvic Acid, Dichromic Acid, Silicic Acid, Sulfanilic Acid, Sulphanilic Acid, Thiocyanic Acid, Toluic Acid, Triphosphoric Acid, Undecylenic Acid, Uric Acid, Oil Of Vitriol, Sulfuric Acid, Sulphuric Acid, Vitriol, Xanthic Acid
Generic synonyms: Chemical Compound, Compound
Derivative terms: Acidify, Acidify, Acidulate

2. Adjective. Harsh or corrosive in tone. "A vitriolic critique"

3. Noun. Street name for lysergic acid diethylamide.

4. Adjective. Being sour to the taste.
Exact synonyms: Acidic, Acidulent, Acidulous
Similar to: Sour
Derivative terms: Acidulousness

5. Adjective. Having the characteristics of an acid. "An acid reaction"
Category relationships: Chemical Science, Chemistry
Similar to: Acidic
Derivative terms: Acidity

Definition of Acid

1. a. Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour- tempered.

2. n. A sour substance.

Definition of Acid

1. Acronym. (databases) atomicity, consistency, isolation, and durability: a set of properties that guarantee database transactions are processed reliably ¹

2. Adjective. Sour, sharp, or biting to the taste; tart; having the taste of vinegar. ¹

3. Adjective. (figuratively) Sour-tempered. ¹

4. Adjective. Of or pertaining to an acid; acidic. ¹

5. Adjective. (music) Denoting a musical genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock. ¹

6. Noun. A sour substance. ¹

7. Noun. (chemistry) Any of several classes of compound having the following properties:- ¹

8. Noun. (slang) lysergic acid diethylamide ¹

¹ Source:

Definition of Acid

1. a type of chemical compound [n -S]

Medical Definition of Acid

1. A fundamental category of many compounds whose water-based solutions have a sour taste, turn blue litmus paper red and can combine with metals to form salts. They are chemical compounds which yield hydrogen ions or protons when dissolved in water, whose hydrogen can be replaced by metals or basic radicals, or which react with bases to form salts and water (neutralization). An extension of the term includes substances dissolved in media other than water. Specific types of acids include: Arrhenius acid: any chemical that increases the number of free hydrogen ions (H+) when added to a water-based solution. The more free hydrogens produced, the stronger the acid. Bronsted or Bronsted-Lowry acid: any chemical that acts as a proton donor in a chemical reaction. Lewis acid: any chemical that accepts two electrons to form a covalent bond during a chemical reaction. (13 Nov 1997)

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Lexicographical Neighbors of Acid

acid (current term)
acid-ash diet
acid-base balance
acid-base equilibrium
acid-base imbalance
acid-base indicator
acid-base indicators
acid-etched restoration
acid-fast stain

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