Meaning of ETIOLOGY in English

[] n, pl -gies [ML aetiologia statement of causes, fr. Gk aitiologia, fr. aitia cause] (ca. 1555) 1: cause, origin; specif: all of the causes of a disease or abnormal condition

2: a branch of knowledge concerned with causes; specif: a branch of medical science concerned with the causes and origins of diseases

Merriam-Webster English vocab.      Английский словарь Merriam Webster.