from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The evolutionary development and history of a species or higher taxonomic grouping of organisms. Also called phylogenesis.
  • n. The evolutionary development of an organ or other part of an organism: the phylogeny of the amphibian intestinal tract.
  • n. The historical development of a tribe or racial group.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The evolutionary history of an organism.
  • n. A phylogenetic diagram.
  • n. The historical development of a human social or racial group

from The Century Dictionary and Cyclopedia

  • n. That branch of biology which attempts to deduce the ancestral history of an animal or a plant from its ontogeny or individual developmental metamorphoses; tribal history: opposed to ontogeny, or the origin and development of individual organisms. Also phylogenesis.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms


Greek phūlon, race, class; see phylum + -geny.
(American Heritage® Dictionary of the English Language, Fourth Edition)
phylo- + -geny (Wiktionary)



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