Main Entry: fa·cies

Pronunciation: \ˈfā-sh(ē-ˌ)ēz\

Function: noun

Inflected Form(s): plural facies

Etymology: New Latin, from Latin, face

Date: circa 1736

1 : general appearance <a plant species with a particularly distinct facies>
2 : an appearance and expression of the face characteristic of a particular condition especially when abnormal <adenoid facies>
3 : a part of a rock or group of rocks that differs from the whole formation (as in composition, age, or fossil content)