Definition of phylogenesis in English:


Pronunciation /ˌfīlōˈjenəsəs/ /ˌfaɪloʊˈdʒɛnəsəs/


  • The evolutionary development and diversification of a species or group of organisms, or of a particular feature of an organism.

    Compare with ontogenesis

    ‘Later, during phylogenesis, phagocytosis of other prokaryotic cell types allowed the acquisition of plastids and mitochondria to form the contemporary eukaryotic cells.’
    • ‘Ontogenesis, we were taught, repeats phylogenesis - or, if you've been out of school too long, the development of the individual organism reiterates the evolution of the species.’


Late 19th century from Greek phulon, phulē ‘race, tribe’+ genesis.