D defs.my
Entry 1 sense Webster, 1913

Agenesis

· A·gen·e·sis · IPA /eɪˈd͡ʒɛnəsɪs/
01 n. Any imperfect development of the body, or any anomaly of organization.
  1. 1.
    Any imperfect development of the body, or any anomaly of organization.(Physiol.)