phylum cnidaria(n = noun.animal) cnidaria, coelenterata, phylum coelenterata - hydras; polyps; jellyfishes; sea anemones; corals;
is a kind of phylum
is a member of metazoa, subkingdom metazoa

cnidaria, phylum, phylum acanthocephala, phylum annelida, phylum arthropoda, phylum aschelminthes, phylum brachiopoda, phylum bryozoa, phylum chaetognatha, phylum chordata, phylum coelenterata, phylum cryptophyta, phylum ctenophora, phylum cycliophora, phylum echinodermata, phylum ectoprocta, phylum entoprocta, phylum mollusca, phylum nematoda, phylum nemertea, phylum nemertina, phylum phoronida, phylum platyhelminthes, phylum pogonophora, phylum porifera, phylum protozoa, phylum pyrrophyta, phylum rotifera, phylum sipuncula