Definition of pathognomy in US English:

pathognomy

noun

  • 1Knowledge or study of the passions or emotions, especially the facial expression of them.

  • 2The knowledge or study of the signs and symptoms by which diseases may be distinguished; a description of such signs and symptoms. rare.

Origin

Late 18th century; earliest use found in Thomas Holcroft (1745–1809), writer. From patho- + -gnomy, after pathognomic.

Pronunciation

pathognomy

/pəˈθɒɡnəmi/