Main Entry:

phy·log·e·ny

Pronunciation:

\fī-ˈlä-jə-nē\

Function:

noun

Inflected Form(s):

plural phy·log·e·nies

Etymology:

International Scientific Vocabulary

Date:

circa 1872

1 : the evolutionary history of a kind of organism 2 : the evolution of a genetically related group of organisms as distinguished from the development of the individual organism 3 : the history or course of the development of something (as a word or custom)