acid
Translation
acid
Examples
Lemons contain citric acid.
Lemons contain citric acid.
The battery is leaking acid.
The battery is leaking acid.
Grammar Patterns
((a type of)) acid a substance with a pH less than 7 Lemons contain citric acid.
Similar Words
Synonyms: none common; Antonyms: alkali, base
Etymology
From Latin 'acidus', meaning 'sour'.
Memory Tips
Think of the sour taste of a lemon. It's uncountable as a substance, but countable (acids) when referring to types of acid.