organelle
noun
or·gan·elle
ˌȯr-gə-ˈnel 
: a specialized cellular part (such as a mitochondrion, chloroplast, or nucleus) that has a specific function and is considered analogous to an organ
Examples of organelle in a Sentence
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Eukaryotes begin to emerge on Earth, with cells now containing enclosed, separated organelles to carry out individual functions within a cell.
—
Ethan Siegel, Big Think, 2 Oct. 2025
The cornea is a perfect alternating stack of tiny fibers that is so regular that light goes right through it, and the cells of the lens have lost nearly all their internal structures (organelles), leaving only a soup of almost identical proteins that don’t interfere much with the passage of light.
—Literary Hub, 25 Sep. 2025
These masters of photosynthesis use solar energy to cause reactions between carbon dioxide and water in specialized organelles, making oxygen and organic carbon.
—Katherine Bourzac, Quanta Magazine, 15 Sep. 2025
The study also highlights that lipid droplets – once thought to be inert fat stores – are in fact active organelles that manage how fat is stored and used in cells.
—New Atlas, 28 Aug. 2025
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Ethan Siegel, Big Think, 2 Oct. 2025
The cornea is a perfect alternating stack of tiny fibers that is so regular that light goes right through it, and the cells of the lens have lost nearly all their internal structures (organelles), leaving only a soup of almost identical proteins that don’t interfere much with the passage of light.
—Literary Hub, 25 Sep. 2025
These masters of photosynthesis use solar energy to cause reactions between carbon dioxide and water in specialized organelles, making oxygen and organic carbon.
—Katherine Bourzac, Quanta Magazine, 15 Sep. 2025
The study also highlights that lipid droplets – once thought to be inert fat stores – are in fact active organelles that manage how fat is stored and used in cells.
—New Atlas, 28 Aug. 2025
See All Example Sentences for organelle
Cite this Entry
“Organelle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/organelle. Accessed 31 Oct. 2025.
Copy CitationKids Definition
organelle
noun
or·gan·elle
ˌȯr-gə-ˈnel
: a structure (as a mitochondrion) in a cell that performs a special function
Medical Definition
organelle
noun
or·gan·elle
ˌȯr-gə-ˈnel
: a specialized cellular part (as a mitochondrion or nucleus) that has a specific function and is considered analogous to an organ
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