Share this entry
morphallaxis Line breaks: morph|al¦laxis
Pronunciation: /ˌmɔːfəˈlaksɪs/

Definition of morphallaxis in English:


[mass noun] Zoology
Regeneration by the transformation of existing body tissues.
Example sentences
  • If the body of an intact Hydra is severed in two, it regenerates by morphallaxis, which does not require new growth.
  • He coined the terms morphallaxis and epimorphosis to describe the two major types of regeneration.
  • The result of morphallaxis is usually a smaller but complete individual, derived entirely from the tissues of part of the original animal.


Example sentences
  • Thus, the first key step in this morphallactic regeneration, when the head region is removed, is the specification of a new head region at the cut surface.
  • Following this, morphallactic regeneration occurs within the body segments adjacent to the new head.
  • In Hydra, regeneration is morphallactic since cell division is unnecessary and a complete Hydra can be regenerated from a piece of the body column.


Late 19th century: from Greek morphē 'form' + allaxis 'exchange'.

Definition of morphallaxis in:
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.

Subscribe to remove ads and access premium resources