Share this entry

Share this page

Hydrozoa

Line breaks: Hydro|zoa
Pronunciation: /ˌhʌɪdrə(ʊ)ˈzəʊə
 
/

Definition of Hydrozoa in English:

plural noun

Zoology
A class of coelenterates which includes hydras and Portuguese men-of-war. Many of them are colonial and some kinds have both polypoid and medusoid phases.
Example sentences
  • The groups Hydrozoa, Scyphozoa and Cubozoa all are generally characterized as having polyps and medusae (although minor lineages have lost medusae and in some cases polyps).
  • Another feature that is quite common in Hydrozoa but not typical of Scyphozoa is colonial organization.
  • However, Hydra is not typical of the Hydrozoa as a whole.

Origin

modern Latin (plural), from hydro- 'water' + Greek zōion 'animal'.

Definition of Hydrozoa in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tenebrous
Pronunciation: ˈtenəbrəs
adjective
dark; shadowy or obscure