facies /ˈfeɪʃiiːz 
/ ▸ noun (plural facies)
1 Medicine the facial expression of an individual that is typical of a particular disease or condition: adenoidal facies are characterized by an open mouth gape.
2 Geology the character of a rock expressed by its formation, composition, and fossil content: a sedimentary investigation of the area led to the postulation of five distinct facies.
– ORIGIN mid 16th century (denoting the face): from Latin, ‘form, appearance, face’.
EnglishOxford Dictionary of English
