Meaning & Definition of word "Acid"
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Acid
/ˈæsɪd/
noun:
- 1. A substance with a sour taste that turns litmus red and reacts with bases to form salts.
- Example: The chemist demonstrated the properties of hydrochloric acid in the laboratory.
- 2. A chemical compound with a pH of less than 7, containing hydrogen ions that can be donated in a reaction.
- Example: Citric acid is commonly found in citrus fruits.
- 3. A substance that donates protons or hydrogen ions and accepts electrons.
- Example: Acetic acid is the main component of vinegar.
adjective:
- 1. Having a sour or sharp taste.
- Example: The acid taste of the lime added a refreshing kick to the drink.
- 2. Relating to the properties of acids.
- Example: The acid solution needs to be handled with care to avoid skin irritation.
Etymology
Late Middle English: from Latin acidus 'sour, sharp', from acere 'to be sour'.
Common Phrases and Expressions
acid test:
A definitive test of the quality or value of something.
acid rain:
Rainfall made acid by atmospheric pollution.
hydrochloric acid:
A strong acidic solution of hydrogen chloride in water.
Related Words
alkaline:
A basic substance that can neutralize acids.
pH:
A scale used to specify the acidity or basicity of an aqueous solution.
buffer:
A solution that resists changes in pH when an acid or base is added.
Slang Meanings of acid
Meaning: LSD, a popular hallucinogenic drug.
Example Sentence: He was tripping on acid all night.
Meaning: A musical style or culture associated with the use of psychedelic drugs.
Example Sentence: The acid music scene really took off in the 90s.