Definition of morphallaxis in English:


Line breaks: morph|al¦laxis
Pronunciation: /ˌmɔːfəˈlaksɪs


[mass noun] Zoology
  • Regeneration by the transformation of existing body tissues.
    More 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.



More 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'.

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