AskDefine | Define zygote

The Collaborative Dictionary

zygote \zy"gote\ (z[imac]"g[=o]t), n. The cell resulting from the union of an ovum and a spermatozoon, or (broadly) the developing new organism arising from such a cell. Syn: fertilized cell. [WordNet 1.5]

Word Net

zygote n : the cell resulting from the union of an ovum and a spermatozoon (including the organism that develops from that cell) [syn: fertilized ovum]



From ζυγωτός < ζυγός.


fertilized egg cell
  • Finnish: tsygootti
  • Hungarian: zigóta
  • Spanish: cigoto

Derived terms

For other meanings see Zygote (disambiguation).
A zygote (from Greek zugōtos ‘joined’, from zugoun ‘to join’) is a cell that is the result of fertilization. That is, two haploid cells—usually an ovum from a female and a sperm cell from a male—merge into a single diploid cell called the zygote (or zygocyte).
In mammals, fusion of the sperm with the ovacyte occurs in the Fallopian tube and the resulting diploid zygote becomes embedded in the uterus wall.
Animal zygotes undergo mitotic cell divisions to become an embryo. Other organisms may undergo meiotic cell division at this time (for more information refer to biological life cycles).


Twins and multiple births can be monozygotic (identical) or dizygotic (fraternal), meaning they arise from one or several (strictly, two) fertilization events.
However, polyspermic zygotes in mice have been manipulated so as to remove one of the two male pronuclei and made to survive birth.

In other species

A biparental zygote is a Chlamydomonas zygote that contains chloroplast DNA (cpDNA) from both parents. Haploid + Haploid = Diploid
zygote in Arabic: لاقحة
zygote in Czech: Zygota
zygote in Danish: Zygote
zygote in German: Zygote
zygote in Estonian: Sügoot
zygote in Spanish: Cigoto
zygote in Esperanto: Zigoto
zygote in French: Zygote
zygote in Ido: Zigoto
zygote in Indonesian: Zigot
zygote in Italian: Zigote
zygote in Latvian: Zigota
zygote in Lithuanian: Zigota
zygote in Macedonian: Зигот
zygote in Dutch: Zygote
zygote in Japanese: 受精卵
zygote in Norwegian: Zygote
zygote in Polish: Zygota
zygote in Portuguese: Zigoto
zygote in Russian: Зигота
zygote in Simple English: Zygote
zygote in Slovak: Zygota
zygote in Serbian: Зигот
zygote in Finnish: Tsygootti
zygote in Swedish: Zygot
zygote in Turkish: Zigot
zygote in Urdu: لاقحہ
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