Definition of Orthonectida in English:

Share this entry

Orthonectida

Pronunciation: /ˌɔːθə(ʊ)ˈnɛktɪdə/

plural noun

Zoology
A minor phylum of mesozoan worms which are internal parasites of a range of marine invertebrates.
Example sentences
  • They are now believed to be made up of two, possibly unrelated, groups: the Dicyemida and Orthonectida.
  • As it turns out, the Orthonectida are almost certainly metazoans, particularly under our stem group definition; but it's anyone's guess whether they, or any other members of the mysterious Mesozoa, are also bilaterians.

Derivatives

orthonectid

noun& adjective
Example sentences
  • In some orthonectids, circular and longitudinal muscles occur beneath the epidermis.

Origin

Modern Latin (plural), from Greek orthos 'straight' + nektos 'swimming' (see nekton).

For editors and proofreaders

Line breaks: Ortho|nec¦tida

Share this entry
 

What do you find interesting about this word or phrase?

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