Webster's 1913 Dictionary
CNIDA
Cni "da, n.; pl. Cnidæ. Etym: [NL. , fr. Gr. (Zoöl.)
Defn: One of the peculiar stinging, cells found in Coelenterata; a nematocyst; a lasso cell.
CNIDARIA
Cni *da "ri *a, n., pl. Etym: [NL. See Cnida. ] (Zoöl.)
Defn: A comprehensive group equivalent to the true Coelenterata, i.e., exclusive of the sponges. They are so named from presence of stinging cells (cnidae ) in the tissues. See Coelenterata.
New American Oxford Dictionary
Cnidaria
Cni dar i a |nīdˈe (ə )rēə naɪdˈɛ (ə )riə |Zoology a phylum of aquatic invertebrate animals that comprises the coelenterates. ORIGIN modern Latin (plural ), from Greek knidē ‘nettle. ’
cnidarian
cni dar i an |nīdˈe (ə )rēən naɪdˈɛ (ə )riən |Zoology ▶noun an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates. ▶adjective relating to or denoting cnidarians.
Oxford Dictionary
Cnidaria
Cnidaria |(k )nʌɪˈdɛːrɪə | ▶plural noun Zoology a phylum of aquatic invertebrate animals that comprises the coelenterates. ORIGIN modern Latin (plural ), from Greek knidē ‘nettle ’.
cnidarian
cnidarian |nɪˈdɛːrɪən |Zoology ▶noun an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates. ▶adjective relating to or denoting cnidarians.
Spanish Dictionary
cnidario
cnidario adjetivo /nombre masculino 1 zool [animal ] Que pertenece al fílum de los cnidarios :los corales y las medusas son cnidarios .2 cnidarios nombre masculino plural zool Fílum de invertebrados con simetría radial, provistos de tentáculos y de unas células urticantes llamadas nematocistos :los cnidarios se pueden presentar bajo dos formas, pólipo (sésil ) y medusa (pelágica ), y se dividen en tres clases: hidrozoos, escifozoos y antozoos .
The Wordsmith Dictionary