Meaning

noun the cause of a disease

noun the philosophical study of causation

originEtymology tree Proto-Indo-European *h₂ey-der. Ancient Greek αἰτῐ́ᾱ (aitĭ́ā) Proto-Indo-European *leǵ- Ancient Greek λόγος (lógos) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -λογίᾱ (-logíā) Ancient Greek αἰτῐολογῐ́ᾱ (aitĭologĭ́ā)der. Latin aetiologiabor. English etiology See origins at aetiology §…

Etymology from Wiktionary, CC BY-SA 3.0