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n. pl. mor·phal·lax·es (-lăk′sēz)
The regeneration of a body part involving structural or cellular reorganization of existing tissues, occurring chiefly in invertebrates.

[New Latin : morph(o)- + Greek allaxis, exchange (from allassein, to exchange, from allos, other; see al- in Indo-European roots).]


n, pl -laxes (-ˈlæksiːz)
(Zoology) zoology the transformation of one part into another that sometimes occurs during regeneration of organs in certain animals
[C20: New Latin, from morpho- + Greek allaxis exchange, from allassein to exchange, from allos other]


(ˌmɔr fəˈlæk sɪs)

n., pl. -lax•es (-ˈlæk siz)
the regeneration of a lost body part by the reorganization and growth of remaining or adjacent tissue.
[1901; morph- + Greek állaxis exchange, derivative (with -sis -sis) of allássein to exchange, ultimately derivative of állos other]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.morphallaxis - regeneration on a reduced scale of a body part; observed especially in invertebrates such as certain lobsters
regeneration - (biology) growth anew of lost tissue or destroyed parts or organs
References in periodicals archive ?
Whereas epimorphosis involves cell proliferation, the formation of a blastema, and stem cell differentiation, morphallaxis implies the dedifferentiation and reorganization of original structures without the recruitment of cells and without massive cell proliferation (Morgan, 1901; Agata et al, 2007).
Because blastemas do not replace all tissues following most types of injuries, both blastema formation and morphallaxis are needed for complete regeneration (Reddien and Alvarado, 2004).
Regeneration and asexual reproduction share common molecular changes: upregulation of a neural glycoepitope during morphallaxis in Lum-briculus.