Acid Definition

ăsĭd
acids
noun
acids
A substance that yields hydrogen ions when dissolved in water.
American Heritage Medicine
Any compound that can react with a base to form a salt, the hydrogen of the acid being replaced by a positive ion; in modern theory, any substance that produces a positive ion and accepts electrons from a base to form covalent bonds: in water solution an acid tastes sour, turns blue litmus paper red, and, in the dissociation theory, produces free hydrogen ions.
Webster's New World
LSD.
Webster's New World
A substance that can act as a proton donor.
American Heritage Medicine
A sour substance.
Use vinegar or another acid in the marinade to tenderize the meat before grilling.
Webster's New World
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adjective
Of, relating to, or containing an acid.
American Heritage
Having too heavy a concentration of acid.
Webster's New World
That is, or has the properties of, an acid.
Webster's New World
Sharp and biting to the taste; sour; tart.
Webster's New World
Having a pH of less than 7.
American Heritage Medicine
Antonyms:
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abbreviation

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

Wiktionary

Other Word Forms of Acid

Noun

Singular:
acid
Plural:
acids

Origin of Acid

  • From Latin acidus sour from acēre to be sour ak- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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