Definition of nematocyst
: one of the stinging organelles of coelenterates used in catching prey
Recent Examples of nematocyst from the Web
Some have sharp skeletons and tentacles with nematocysts (stinging cells) that immobilize prey.
A jellyfish’s tentacles do seem to be an odd choice of meal: humans are wary of their sting, which occurs when skin contact triggers small, harpoon-like structures called nematocysts to inject venoms that attack the victim’s cells.
Polykrikos cells have a capsule, called a nematocyst, that contracts to propel a sharp stylet through the water—and through the armor of another microbe.
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Origin and Etymology of nematocyst
International Scientific Vocabulary
First Known Use: 1875See Words from the same year
Learn More about nematocyst
Britannica.com: Encyclopedia article about nematocyst
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