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Word of the Day Wednesday, June 10, 2026

mitochondrion

/mɪtəʊkɒndriən/ noun · British & US
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What does mitochondrion mean?

noun

A membrane-bound organelle found in the cells of most eukaryotes, where cellular respiration takes place, and energy is produced in the form of ATP.

Example

"The mitochondrion is often referred to as the powerhouse of the cell."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymologically related

Synonyms for mitochondrion

Rhymes with mitochondrion