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parthenogenesis Syllabification: par·the·no·gen·e·sis
Pronunciation: /ˌpärTHənōˈjenəsəs/

Definition of parthenogenesis in English:


Reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants.
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: /ˌpärTH(ə)nōjəˈnedək/
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: /ˌpärTH(ə)nōjəˈnedək(ə)lē/
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'.

Words that rhyme with parthenogenesis

genesis, pathogenesis
Definition of parthenogenesis in:
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