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English definition of “mitochondrion”

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 foodCells
(Definition of mitochondrion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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