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Alternation of generations between sexual and asexual forms.

met′a·ge·net′ic (-jə-nĕt′ĭk) adj.
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.


(Biology) another name for alternation of generations
metagenetic, ˌmetaˈgenic adj
ˌmetageˈnetically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌmɛt əˈdʒɛn ə sɪs)

reproduction characterized by the alternation of a sexual generation and a generation that reproduces asexually; alternation of generations.
met`a•ge•net′ic (-dʒəˈnɛt ɪk) met`a•gen′ic, adj.
met`a•ge•net′i•cal•ly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


alternation of generations across reproductive cycles. Cf. xenogenesis.metagenetic, metagenic, adj.
See also: Biology
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.metagenesis - alternation of sexual and asexual generations
alternation of generations, heterogenesis, xenogenesis - the alternation of two or more different forms in the life cycle of a plant or animal
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References in periodicals archive ?
Assuming that metagenesis is typical among the Semaeostomeae species (18 metagenetic life cycles over 20 descriptions of semaeostome species; Jarms, 2010; Morandini et al., 2013), this species is likely to have a metagenetic life cycle.
The maximum lifespan of echinoplutei remains an open question, as does, given the ability of these larvae to undergo cloning (Eaves and Palmer, 2003; Vaughn and Strathmann, 2008), the possibility that they afford echinoids the potential for metagenesis (Mortensen, 1921).