Definitions:

1. A measure used in physical anthropology and forensic science to describe the relative proportions of the face. NOUN
   • Researchers use the facial index in forensic science to help identify human remains.
2. A ratio used in anthropology and anatomy to describe the proportion of the face, calculated by dividing the height of the face by its width and multiplying the result by 100. NOUN
   • The anthropologist calculated the facial index to classify the skull into one of the facial types.
3. Measurement that helps in categorizing facial shapes, used for various scietific, forensic, and medical purposes. NOUN
   • A facial index of 92 indicates a leptoprosopic, or long-faced, structure.

Synonyms:

• craniofacial ratio
• face hight-width ratio
• facial proportion index