# biochemical

/ˌbaɪoʊˈkɛməkəɫ/ (US) · /bˌaɪəʊkˈɛmɪkəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/biochemical
Updated: 2026-05-07

## Definition

relating to the chemical processes that happen inside living things, like plants, animals, and humans.

For teachers: relating to the chemical substances and processes that occur within biological organisms. Often used to describe physiological reactions or the molecular basis of life.

## Examples

- The body uses biochemical reactions to turn food into energy.
- Researchers are studying the biochemical changes that occur in the brain during deep sleep cycles.
- The drug works by blocking specific biochemical pathways that lead to inflammation, providing relief for patients with chronic autoimmune conditions without affecting the entire immune system.

## Usage notes

- Typically used attributively before a noun; frequently collocates with 'process', 'reaction', or 'pathway'.

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