physiognomy (fĭzˌē-ŏgˈnə-mē, -ŏnˈə-mē)
1. The art, science, divination or practice of judging human character through facial features.
Physiognomy is a central, implicit assumption underlying the plot of Oscar Wilde's The Picture of Dorian Gray. In 19th century American literature, physiognomy figures prominently in the short stories of Edgar Allan Poe.
Synonyms: judging a book by its cover, petty, phiz, phizog, shallowness, superficialness.