(LONGMAN2000) acid | Definition: 酸
| (IELTS4000) acid | Definition: sour; water-soluble compounds having a sour taste; quality of being sarcastic, bitter, or scornful acknowledge:
| (SAT5000) acid | Definition: A sour substance.
| | (ESS4000) acid | Definition: An acid is a chemical that can burn or dissolve other substances. | Example: →In chemistry class, we mixed two acids together and watched the reaction.
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acid