1) Absence of a body part 2) Agenesia 3) Barrenness 4) Congenital disorder 5) Imperfect development 6) Impotence 7) Nondevelopment 8) Sterility Found on https://www.crosswordclues.com/clue/agenesis
In medicine, agenesis (s) refers to the failure of an organ to develop during embryonic growth and development due to the absence of primordial tissue. Many forms of agenesis are referred to by individual names, depending on the organ affected: ==Eye agenesis== Eye agenesis is a medical condition in which sufferers are born with no eyes. ==Dental ... Found on http://en.wikipedia.org/wiki/Agenesis
in human physiology, failure of all or part of an organ to develop during embryonic growth. Many forms of agenesis are consistently lethal, as when ... [3 related articles] Found on http://www.britannica.com/eb/a-z/a/28
<embryology> A condition in which a part of the body (such as an organ or a tissue) does not completely develop or fails to develop at all. ... (09 Oct 1997) ... Found on http://www.encyclo.co.uk/local/20973
A·gen'e·sis noun [ Greek 'a priv. + ... birth.] (Physiol.) Any imperfect development of the body, or any anomaly of organization. Found on http://www.encyclo.co.uk/webster/A/42
In medical terms, agenesis means absence of something. Agenesis of the corpus callosum means a part of the brain that joins the two hemispheres together is missing. Renal agenesis means the kidneys are missing. Found on https://www.arc-uk.org/tests-explained/glossary-of-terms