nematocyst

== English == === Etymology === Formed as nemato- +‎ cyst after the French nématocyste. === Noun === nematocyst (plural nematocysts) (biology) A capsule, in certain cnidarians, containing a barbed, threadlike tube that delivers a paralyzing sting ==== Synonyms ==== cnida cnidocyst cnidocyte ==== Derived terms ==== micronematocyst