aetiology
noun (British English)(North American English etiology)
(plural aetiologies)
(- [uncountable, countable]
the cause of a disease or medical condition 病原学;病因学(说) - [uncountable]
the scientific study of the causes of disease 病原学;病因学(说)
Word Originmid 16th cent.: via medieval Latin from Greek aitiologia, from aitia ‘a cause’ + -logia (see -ology).