Definition of phylogeny in English:



mass noun
  • 1The branch of biology that deals with phylogenesis.

    Compare with ontogeny
    • ‘Therefore it was important to clarify the theoretical foundations of both phylogeny and systematics.’
    • ‘In addition to ecology, phylogeny may also influence life history parameters.’
    • ‘The correlation between molecular phylogeny and biogeography is close.’
    • ‘In both cases, alterations of developmental timing produce parallels between ontogeny and phylogeny.’
    • ‘Phylogenetics, the science of phylogeny, is one part of the larger field of systematics, which also includes taxonomy.’
    1. 1.1
      another term for phylogenesis
      • ‘If this is indeed so, then symbiont phylogeny should roughly correlate with host phylogeny.’
      • ‘Basic questions such as the chromosomal evolution or the phylogeny of these living fossils are still unresolved.’
      • ‘The phylogeny of Rex3 diverges significantly from the classical fish phylogeny.’
      • ‘The phylogeny of archaeans is based on molecular sequences in their DNA.’
      • ‘Here we use gene genealogies to investigate the phylogeny of recent speciation in the heliconiine butterflies.’


Late 19th century: from Greek phulon, phulē ‘race, tribe’ + -geny.