Pronunciation: (ē"tē-ol'u-jē), [key]
a. the study of the causes of diseases.
b. the cause or origin of a disease.
2. the study of causation.
3. any study of causes, causation, or causality, as in philosophy, biology, or physics. Also,aetiology.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.