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[par-thuh-noh-jen-uh-sis] /ˌpær θə noʊˈdʒɛn ə sɪs/
noun, Biology.
development of an egg without fertilization.
Origin of parthenogenesis
First recorded in 1840-50; partheno- + genesis
Related forms
[pahr-thuh-noh-juh-net-ik] /ˌpɑr θə noʊ dʒəˈnɛt ɪk/ (Show IPA),
parthenogenetically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for parthenogenetic


a type of reproduction, occurring in some insects and flowers, in which the unfertilized ovum develops directly into a new individual
human conception without fertilization by a male; virgin birth
Derived Forms
parthenogenetic (ˌpɑːθɪˌnəʊdʒɪˈnɛtɪk) adjective
parthenogenetically, adverb
Word Origin
C19: from Greek parthenos virgin + genesis birth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for parthenogenetic



"reproduction without fertilization," 1849, from Greek parthenos "virgin," of unknown origin, + genesis (see genesis). Related: Parthenogenetic.

Online Etymology Dictionary, © 2010 Douglas Harper
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parthenogenetic in Medicine

parthenogenesis par·the·no·gen·e·sis (pär'thə-nō-jěn'ĭ-sĭs)
A form of reproduction in which an unfertilized egg develops into a new individual, occurring commonly among insects and certain other arthropods.

par'the·no·ge·net'ic (-jə-nět'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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parthenogenetic in Science
Reproduction in which an egg develops into a new individual without being fertilized. Aphids and certain other insects can reproduce by parthenogenesis. Parthenogenesis does not necessarily produce clones of the parent. Among hymenopterans such as honeybees and ants, the haploid males develop from unfertilized eggs laid by the queen, who is diploid. Parthenogenesis is a form of apomixis.

parthenogenetic adjective (pär'thə-nō-jə-nět'ĭk)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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