mitochondrial
Americanadjective
Explanation
Anything mitochondrial has to do with the tiny energy-producing organelles in a cell. Mitochondrial diseases result in damage to cells when they can't generate enough energy. Mitochondrial comes from mitochondria, those billions and billions of minuscule parts of a cell that act as its battery, generating energy to keep it functioning. A German microbiologist coined the word from Greek roots mitos, "thread," and khondrion, "little granule." Mitochondrial DNA is the specific genetic material within mitochondria; and mitochondrial therapies can involve replacing parts of a person's mitochondria in order to treat or prevent certain diseases.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The findings point to a common pathway that connects various types of cellular stress to mitochondrial damage and stem cell aging.
From Science Daily • Apr. 16, 2026
Understanding how mitochondrial pearling works and how it is controlled could provide important insights into diseases linked to mtDNA.
From Science Daily • Apr. 13, 2026
"Since Margaret Reed Lewis first sketched mitochondrial pearling in 1915, it has largely been dismissed as an anomaly linked to cellular stress," says Landoni.
From Science Daily • Apr. 13, 2026
Scott has his eye on mitochondrial transplantation, in which healthy mitochondria, the cell’s minute, energy-producing structures, are transferred into cells to—theoretically—restore their ability to generate power and survive.
From Slate • Mar. 30, 2026
Indian and European mitochondrial DNA are strikingly different.
From "1491" by Charles C. Mann
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.