prosopon

From Ancient Greek πρόσωπον (prósōpon, “face, mask, person”).

prosopon (plural prosopons or prosopa)

1. (historical, Ancient Greek theatre) A mask worn by an actor to indicate the character being played.
2. (theology) The self-manifestation of an individual.
3. (zoology) A variety of small-scale structures in trilobites, such as ribbing, domes, and perforations.

• prosopography

• hypostasis