Definition of "aetiology" [æ•ti•ol•o•gy]

• Variant of etiology. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Collinge J, Sidle KCL, Meads J, et al. Molecular analysis of prion strain variation and the aetiology of ‘new variant’ CJD."
• "In other words, out of the 1,300 cases now being studied on the programme, several dozen new diseases should soon be identified and their exact aetiology unravelled."
• "This ethnography of alleged links between child-rearing practices, rural economic decline and mental illness probably did get the aetiology of schizophrenia in Ireland wrong."