Amnesia is the Greek word Αμνησία. It is composed by Greek word μνήμη (mnimi means memory) and a- which means the lack of something. So the memory loss is Amnesia.
Amnesia

But you don't know it
Delve into orthopaedics, a crucial medical specialty focusing on rectifying skeletal and muscular issues, rooted in Greek principles of ‘straight’ and ‘education’.
Learn the meaning of ‘aseptic,’ its Greek origins, and its crucial role in preventing infection in medical settings.