1) Aetiologic 2) Aetiological 3) Etiologic 4) Philosophy 1) Aetiologic 2) Aetiological 3) Etiologic 
• (a.) Pertaining to, or inquiring into, causes; aetiological.
E`ti·o·log'ic·al adjective Pertaining to, or inquiring into, causes; ætiological. 
[adj] - of or relating to the philosophical study of etiology 2. [adj] - relating to the etiology of a disease
etiological, aetiological (British) 1. Relating to the philosophical study of causation. 2. A reference to the etiology of a disease; such as, 'an etiological agent'.
etiologic adjective relating to the etiology of a disease; `etiological agent`