Nearby Words
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
|
Link To Parthenogenesis
:10
:09
:08
:07
:06
:05
:04
:03
:02
:01
Parthenogenesis
is always a great word to know.
So is vascular. Does it mean:
| the compact area of a nerve cell that constitutes the nucleus and surrounding cytoplasm, excluding the axons and dendrites |
| pertaining to or provided with vessels or ducts that convey fluids, as blood, lymph, or sap |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
parthenogenesis
"reproduction without fertilization," 1849, from Gk. parthenos "virgin" + genesis.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Cite This Source
American Heritage
Medical Dictionary
parthenogenesis par·the·no·gen·e·sis (pär'thə-nō-jěn'ĭ-sĭs)
n.
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.
Cite This Source
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
parthenogenesis  (pär'thə-nō-jěn'ĭ-sĭs) Pronunciation Key
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.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Britannica
Encyclopedia
parthenogenesis
biological reproduction that involves development of a female (rarely a male) gamete (sex cell) without fertilization. It occurs commonly among lower plants and invertebrate animals, particularly rotifers, aphids, ants, wasps, and bees. An egg produced parthenogenetically may be either haploid (i.e., with one set of dissimilar chromosomes) or diploid (i.e., with a paired set of chromosomes).
Learn more about parthenogenesis with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Cite This Source
Word Dynamo By Dictionary.com
Dictionary.com, LLC. Copyright © 2012. All rights reserved.