facies
/ˈfeɪʃɪˌiːz/noun
(复同单)
1
- Medicine the appearance or facial expression of an individual that is typical of a particular disease or condition【医】（某种疾病患者特有的）面容。
2
- Geology the character of a rock expressed by its formation, composition, and fossil content【地质】相。
词源
early 17th cent. (denoting the face)： from Latin, 'form, appearance, face'.