Dictionary.com
Thesaurus.com
Synonyms

phylogeny

American  
[fahy-loj-uh-nee] / faɪˈlɒdʒ ə ni /
Also phylogenesis

noun

  1. the development or evolution of a particular group of organisms.

  2. the evolutionary history of a group of organisms, especially as depicted in a family tree.


phylogeny British  
/ ˌfaɪləʊˈdʒɛnɪsɪs, ˌfaɪləʊdʒɪˈnɛtɪk, ˌfaɪləʊˈdʒɛnɪk, faɪˈlɒdʒɪnɪ /

noun

  1. biology the sequence of events involved in the evolution of a species, genus, etc Compare ontogeny

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

phylogeny Scientific  
/ fī-lŏjə-nē /
  1. The evolutionary development and history of a species or higher taxonomic grouping of organisms.


Other Word Forms

Etymology

Origin of phylogeny

First recorded in 1865–70; phylo- + -geny

Explanation

Use the noun phylogeny to describe the branch of biology that focuses on evolution and the differences between species. You're most likely to come across the word phylogeny in a biology class. It's another term for "phylogenetics," the study of evolution, diversity, and the way different organisms and species are related to each other. The German biologist Ernst Heinrich Haeckel was the first to use the word phylogeny, in 1866, and Darwin used it soon after. It combines the Greek phylos, "race," with geneia, "origin."

Keep Reading on Vocabulary.com

Vocabulary lists containing phylogeny

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Since the behavioral data did not always align perfectly with the species in that phylogeny, the researchers simplified the evolutionary tree to 44 genera, along with five families and one superfamily.

From Science Daily • May 2, 2026

"It describes a new genus and species, but places them in the phylogeny of tardigrades," Nelson told Salon.

From Salon • Sep. 1, 2024

The results corroborated the systematic membership of Dermaptera to Polyneoptera and strongly supported the phylogeny within the order, which was inferred from the latest molecular phylogenetic analyses but was significantly different from the conventional understanding.

From Science Daily • Mar. 21, 2024

Evolutionary biologists could list many reasons why understanding phylogeny is important to everyday life in human society.

From Textbooks • Jan. 1, 2015

Comments on some recent studies of song bird phylogeny.

From Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae by Jenkinson, Marion Anne

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "phylogeny" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com