Dictionary.com
definitions

-geny

a combining form meaning “origin,” used in the formation of compound words: phylogeny.

Origin of -geny

From the Greek word -geneia, dating back to 1885–90. See -gen, -y3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for -geny

-geny

n combining form

indicating origin or manner of developmentphylogeny
Derived Forms-genic, adj combining form

Word Origin for -geny

from Greek -geneia, from -genēs born
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
Word Origin and History for -geny

word-forming element meaning "genesis, origin, production," from French -génie, from Greek -geneia, from genes "born, produced" (see genus).

Online Etymology Dictionary, © 2010 Douglas Harper
-geny in Medicine

-geny

suff.

Production; generation; origin:ontogeny.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.