Meaning & use
acid
A chemical substance that reacts with a base to form a salt and typically tastes sour or is corrosive.
See it in a sentence
Vinegar contains acetic acid, which gives it a sharp, sour taste.
The lab technician handled the acid carefully to avoid burning her skin.
A note on using this word
In chemistry, acids have a pH below 7; the word is also used figuratively for a sharp tone, as in an 'acid remark.'
Words with a similar meaning
This term is best learned through its definition and examples.
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
basealkali
Another way to use it
2. adjective
Sharp, sour, or biting, whether in taste or in tone.
He made an acid comment about her driving that upset everyone.
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