noun🔗ShareNematocistosA 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. "Cuando la medusa rozó la pierna del nadador, los nematocistos se dispararon, inyectando veneno y causando una picadura dolorosa.biologyanimalanatomyorganismChat with AIVocabulary GamePractice Reading
