Definition of parthenogenesis in English:


Syllabification: par·the·no·gen·e·sis
Pronunciation: /ˌpärTHənōˈjenəsis


  • Reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants.
    More example sentences
    • Reproductive modes include sexual reproduction and parthenogenesis, but much remains to be known about development.
    • In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis.
    • This process is known as parthenogenesis, where unfertilized eggs develop into embryos without sperm.



Pronunciation: /-jəˈnetik/
More example sentences
  • Sexual reproduction in cyclically parthenogenetic rotifers results in the production of diapausing, fertilized eggs, which can survive for decades in sediment egg banks.
  • The first hypothesis assumes that triploidy is associated with the origin of parthenogenesis and that both diploid and tetraploid parthenogenetic forms are derived.
  • It reportedly reproduces exclusively by parthenogenetic female gametes and fragmentation.


Pronunciation: /-jəˈnetik(ə)lē/
More example sentences
  • In parthenogenetically reproducing populations, traits involved in sexual reproduction are no longer under selection and thus potentially subject to vestigialization.
  • An alternative sexual reproductive mode is, for instance, arrhenotoky, where males are produced parthenogenetically and are haploid, whereas females are diploid and produced from fertilized eggs.
  • In apomictic plants, embryos develop parthenogenetically (without fertilization) from unreduced somatic or gametophytic cells.


mid 19th century: modern Latin, from Greek parthenos 'virgin' + genesis 'creation'.

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elaborate ornamentation of a vocal melody