sematology
/ˌsɛməˈtɒlədʒi/ /ˌsiːməˈtɒlədʒi/noun
The branch of knowledge concerned with signs, especially in relation to thought and knowledge; the study of signs; semiotics.
Origin
Late 17th century (in an earlier sense). From ancient Greek σηματ-, σῆμα sign + -ology.