症状学,符号学
Semeiology \Se`mei*ol"o*gy\, or Semiology \Se`mi*ol"o*gy\, n. [Gr. shmei^on a mark, a sign + -logy.] The science or art of signs. Specifically: (a) (Med.) The science of the signs or symptoms of disease; symptomatology. (b) The art of using signs in signaling.