# mitochondrial

/ˌmaɪtəˈkɑndɹiəɫ/ (US) · /mˌaɪtəkˈɒndɹɪəl/ (UK) · CEFR C1 · Adjective

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

## Definition

relating to the part of a cell that makes energy. You use this word when talking about biology or how your body gets power from food.

For teachers: relating to or derived from mitochondria, the organelles responsible for energy production within eukaryotic cells. Typically used in biological, medical, or genetic contexts.

## Examples

- Mitochondrial DNA is passed down from the mother.
- The patient was diagnosed with a rare mitochondrial disease that affects how her muscles use oxygen.
- Researchers are investigating how mitochondrial dysfunction contributes to the aging process and the development of neurodegenerative conditions like Parkinson's disease.

## Usage notes

- Typically used attributively before a noun; often found in scientific collocations like 'mitochondrial DNA' or 'mitochondrial matrix'.

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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.