noun🔗ShareNématocystesA capsule, in certain cnidarians, containing a barbed, threadlike tube that delivers a paralyzing sting"When the jellyfish brushed against the swimmer's leg, the nematocysts fired, injecting venom and causing a painful sting. "Lorsque la méduse a frôlé la jambe du nageur, les nématocystes se sont déclenchés, injectant du venin et provoquant une piqûre douloureuse.biologyanimalanatomyorganismChat with AIVocabulary GamePractice Reading
