Advertisement
Advertisement
cnidarian
[ nahy-dair-ee-uhn ]
cnidarian
/ naɪˈdɛərɪən; knaɪ- /
noun
- any invertebrate of the phylum Cnidaria , which comprises the coelenterates
adjective
- of, relating to, or belonging to the Cnidaria
cnidarian
/ nī-dâr′ē-ən /
- Any of various invertebrate animals of the phylum Cnidaria, having a body with radial symmetry and tentacles that bear microscopic stinging capsules called nematocysts. The tentacles surround a mouth that opens into a saclike internal cavity and that is used both for ingesting food and for eliminating wastes. Cnidarians evolved in the Precambrian Era, but it is not known from what type of organism. Cnidarians include the jellyfishes, hydras, sea anemones, and corals.
Discover More
Word History and Origins
Origin of cnidarian1
Discover More
Word History and Origins
Origin of cnidarian1
C20: from New Latin Cnidaria, from Greek knidē nettle
Advertisement
Word of the Day
[in-vet-er-it ]
Meaning and examplesStart each day with the Word of the Day in your inbox!
By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy Policies.
Advertisement
Advertisement
Advertisement
Browse