noun🔗ShareCnidariosAny of various invertebrate animals, such as jellyfish, hydras, sea anemones, corals and formerly sponges and ctenophores that belong to the phylum Cnidaria."During our field trip to the aquarium, we learned that jellyfish, corals, and sea anemones are all examples of cnidarians. "Durante nuestra excursión al acuario, aprendimos que las medusas, los corales y las anémonas de mar son ejemplos de cnidarios.animalbiologyorganismoceannatureChat with AIVocabulary GamePractice Reading