IPA: //ˌeɪ.dʒəˈniː.zə//
KK: /ˌeɪ.dʒəˈniː.zə/
A condition where an organ or body part is absent due to failure to develop during embryonic growth.
The patient was diagnosed with agenesia of the left kidney, meaning it did not develop properly during gestation.
Agenesia is formed from "a-" (meaning without) and "genesia" (from Greek "genesis", meaning origin or creation). The word refers to a condition of being born without a particular part or organ, indicating a lack of development or formation.
Think of 'without' ('a-') and 'origin' or 'creation' ('genesia') to remember that agenesis means a lack of development or being born without something.