A rare variant term for agenesis; the congenital absence or failure of development of an organ or structure.
Alternative Greek-based form from a- (without) + genesis (creation), sometimes used in medical terminology as a synonym for agenesis.
'Agennesis' is such a rare medical term that it barely appears even in comprehensive medical dictionaries—an example of how English medicine eventually standardizes on one preferred term, leaving alternatives as historical curiosities.
Complete word intelligence in one call. Free tier — 50 lookups/day.