[ nahy-dair-ee-uh ]
/ naɪˈdɛər i ə /

noun Zoology.

an alternative name for the invertebrate phylum Coelenterata, giving emphasis to the stinging structures as characteristic of the phylum.

Origin of Cnidaria

From New Latin; see origin at cnida, -aria Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cnidaria

Word Origin and History for cnidaria



phylum of stinging invertebrates, from Modern Latin cnida, from Greek knide "nettle," from stem of knizein "to scratch scrape." Related: Cnidarian.

Online Etymology Dictionary, © 2010 Douglas Harper