AETIOLOGY
Meaning of AETIOLOGY in English
ae ‧ ti ‧ ol ‧ o ‧ gy BrE AmE , etiology /ˌiːtiˈɒlədʒi $ -ˈɑːl-/ noun [uncountable] medical
the study of what causes disease
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012