Acid meaning

ăsĭd
Frequency:
A substance having a sour taste.
noun
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(geology) Containing a large proportion of silica.

Acid rocks.

adjective
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Having a sour taste.
adjective
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Biting, sarcastic, or scornful.

An acid wit; an acid tone of voice.

adjective
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Sharp and biting to the taste; sour; tart.
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Sharp or sarcastic in temperament or speech.
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That is, or has the properties of, an acid.
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Having too heavy a concentration of acid.
adjective
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Designating or of color that is vivid or luminous.

Acid green.

adjective
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A sour substance.

Use vinegar or another acid in the marinade to tenderize the meat before grilling.

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(slang) LSD.
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(chem.) 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.
noun
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Any of a class of compounds that form hydrogen ions when dissolved in water, and whose aqueous solutions react with bases and certain metals to form salts. Acids turn blue litmus paper red and have a pH of less than 7. Their aqueous solutions have a sour taste.
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(Atomic, Consistent, Isolated, Durable) The properties of a transaction in a well-designed database management system (DBMS). The transaction must be ATOMIC (all updating tasks must be completed or nothing is done), CONSISTENT (it cannot leave the database in a state that violates any integrity rules), ISOLATED (remain invisible to other operations until completed) and DURABLE (will complete or be reversed if the system fails in the interim).
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(databases) Atomicity, consistency, isolation, and durability: a set of properties that guarantee database transactions are processed reliably.
acronym
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The definition of acid is sour or sharp in taste, or having a pH of under 7 in chemistry.

Lemon juice and vinegar are each an example of an acid.

noun
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Acid is defined as something that has a sour taste, or something that has a pH of less than 7 in chemistry.

Lemon is an example of an acid substance.

adjective
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The quality of being sarcastic, bitter, or scornful.

Wrote with acid about her first marriage.

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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