noun
on one's face; one's face
Formal or literary noun referring to the surface of the face or something being on the face. Often used in set phrases like 面上に現れる.
彼の不安は面上に現れていた。
His anxiety showed on his face.
noun
meeting face-to-face; seeing in person
Archaic usage, mainly found in old letters. Refers to meeting someone in person rather than communicating indirectly.
古い手紙には「面上の折」などの表現が見られる。
In old letters, expressions like 面上の折 (on the occasion of meeting in person) can be found.