[ ey-jen-uh-sis ]
/ eɪˈdʒɛn ə sɪs /

noun Pathology.

absence of or failed development of a body part.
sterility; impotence; barrenness.
Also a·ge·ne·sia [ey-juh-nee-zhuh, -zhee-uh, -see-uh] /ˌeɪ dʒəˈni ʒə, -ʒi ə, -si ə/.

Origin of agenesis

From New Latin, dating back to 1850–55; see origin at a-6, genesis

Related forms

a·ge·net·ic [ey-juh-net-ik] /ˌeɪ dʒəˈnɛt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for agenesia


/ (eɪˈdʒɛnɪsɪs) /


(of an animal or plant) imperfect development
impotence or sterility

Derived Forms

agenetic (ˌeɪdʒəˈnɛtɪk), adjective
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

Medicine definitions for agenesia


[ ā-jĕnĭ-sĭs ]


Absence or incomplete development of an organ or body part.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.