n. 古文书, 古文书学

[ noun ]
the study of ancient forms of writing (and the deciphering of them)
<noun.cognition>

Paleography \Pa`le*og"ra*phy\, n. [Paleo- + -graphy: cf. F.
pal['e]ographie.]
1. An ancient manner of writing; ancient writings,
collectively; as, Punic paleography.

2. The study of ancient inscriptions and modes of writing;
the art or science of deciphering ancient writings, and
determining their origin, period, etc., from external
characters; diplomatics.