Definitions:

1. In biology, describes the outward appearance of a biological organism or community, reflecting the environment conditions influencing it. NOUN
   • The forest's facies has changed due to an increase in precipitation over the years.
2. In geology, refers to the characteristics of a rock or sediment that reflect its depositional environment, that include aspects like mineral composition, grain size, texture, and fossil content. NOUN
   • The sandstone facies indicated that this area was once a desert.
3. In medicine, refers to the distinctive appearance of the face that is characteristic of a particular condition or disease. NOUN
   • The patient exhibited a 'moon face', a typical facies of Cushing's syndrome.

Synonyms:

• expression of the face
• features
• visage