Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “mitochondrion”


noun [C]     /ˌmaɪ.təˈkɒn.dri.ən/ US  /-t̬oʊˈkɑːn-/ (plural mitochondria) specialized
in a cell , a long or round piece found in the cytoplasm (= a substance surrounding the nucleus ) that produces energy for the cell by breaking down food Cells
(Definition of mitochondrion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of mitochondrion

Definitions of “mitochondrion” in other dictionaries

Translations of “mitochondrion”

Word of the Day


a skilled and trained cook who works in a hotel or restaurant, especially the most important cook

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More