noun (plural mitochondria /-drēə/)Biology
An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers (cristae).
- Chloroplasts are cell organelles comparable to the mitochondria of animal cells.
- Inside the cytoplasm are mitochondria and endoplasmic reticulum.
- The singlet oxygen damages cell membranes, mitochondria and cell nuclei.
Early 20th century: modern Latin, from Greek mitos 'thread' + khondrion (diminutive of khondros 'granule').
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