# acidic

/əˈsɪdɪk/ (US) · /ɐsˈɪdɪk/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/acidic
Updated: 2026-05-04

## Definition

having the sharp, sour taste or chemical properties of acid. You use this word for things like lemons, vinegar, or rain that can burn or dissolve other materials.

For teachers: having the chemical properties of an acid, such as a pH level below 7, a sour taste, or the ability to react with bases and metals.

## Examples

- Lemons are very acidic fruits.
- The acidic soil in this region makes it difficult to grow most vegetables without adding lime.
- The rapid decline of the coral reef was attributed to increasing ocean acidity, which dissolves the calcium carbonate structures essential for their survival.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.