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a powerful hallucinogenic drug

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

containing acid; "an acid taste"

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

A sour substance.

One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.

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

A sour substance.

One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.

Sour, and sharp or biting to the taste, as vinegar.

A sour substance, usually liquid; that which combines with a base to form a salt.

1. A compound of an electronegative element or radical with hydrogen; it forms salts by replacing all or part of the hydrogen with an electropositive element or radical. An acid containing one displaceable atom of hydrogen in the molecule is called monobasic; one containing two such atoms, bibasic; and one containing more than two, polybasic. 2. In popular language, any chemical compound which has a sour taste. 3. Sour, sharp to the taste: 4. Relating to an acid; giving an acid reaction, turning a vegetable blue red. (For definitions of the different acids, see the adjectives or under acidum; the acids official in the U.S. and Br. Pharmacopeias are defined under acidum.).

A sour substance; very pungent; reddens litmus paper.

Sharp: sour.

A sour substance: (chem.) one of a class of substances, usually sour, which turn vegetable dyes to red, and combine with alkalies, metallic oxides, etc., to form salts.

A sour substance; that which unites with a base to form a salt.

Sharp to the taste, as vinegar; sour; of or like an acid.

Any sour substance.

A compound of hydrogen capable of uniting with a a bse to form a salt.

Sour and sharp to the taste.

A sour substance; a substance capable of uniting with salifiable bases and forming salts.

Something which causes sourness to the taste.

Sour; sharp; biting to the taste.

The French also use the term aigre, when referring to the voice, in the sense of sharp and shrill :-as une voix aigre, vox aspera.

Sour.

A compound of an electronegative element with one or more hydrogen atoms which are replaceable by electropositive atoms.

A salt of hydrogen. The following properties are common to the most important acids: Solubility in water.

A sour taste.

The power of reddening most organic blue and violet coloring matters, and of restoring the original color of substances which have been altered by alkalies.

The power of decomposing most carbonates, causing effervescence.

The power of destroying the characteristic properties of alkalis more or less completely, at the same time losing their own distinguishing characters and forming alkaline salts.

n. [Latin, French] A sour substance;—an electro-negative substance having the properties of combining with alkalies and alkaline oxides, and of reddening most blue vegetable colours, and usually with a strong, sharp taste.