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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).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Brien (1968) described the morphogenetic action of the somatic cells during the blastogenetic development of ascidians as driven by morphallactic events.
In hydra, although regeneration after injury is morphallactic, budding instead involves local cell proliferation (Holstein et ai, 1991).
In apodids, gut regeneration involves a morphallactic remodeling of the remaining intestinal tissues to form a functionally complete organ without cell proliferation, whereas in aspidochirotids and juveniles of dendrochirotids, mitotic division in the cells of the luminal epithelium plays a significant role in the development of the new intestine.