n, pl  in*dex*es  or  in*di*ces   1  :  FOREFINGER  2  :  a list (as of bibliographical information or citations to a body of literature) arranged usu. in alphabetical order of some specified datum (as author, subject, or keyword) <IndexMedicus of the U.S. National Library of Medicine>   3 a  :  a ratio or other number derived from a series of observations and used as an indicator or measure (as of a condition, property, or phenomenon) <physiochemical esof the urine, the blood, and the gastric juice -Jour. Amer. Med. Assoc.>   b  :  the ratio of one dimension of a thing (as an anatomical structure) to another dimension - see CEPHALIC INDEX CRANIAL INDEX  .
 
 
 
Similar sounding terms:  in·ad·e·qua·cy  indicus 
 
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