noun
etiology; aetiology
Medical term for the study of causes or origins of disease.
See also: 病因 (びょういん)
病因学は病気の原因を研究する医学の一分野です。
Etiology is a branch of medicine that studies the causes of diseases.
病因 refers to the cause of a disease itself, while 病因学 is the academic study of such causes.
Compound of 病因 (cause of disease) + 学 (study, -ology).