study or knowledge of the passions or emotions or their manifestations
Word origin
C18: from patho- + -gnomy, as in physiognomy
pathognomy in American English
(pəˈθɑɡnəmi)
noun
Medicine
the study of the symptoms or characteristics of a disease; diagnosis
Word origin
[1785–95; pathognom(ic) + -y3]This word is first recorded in the period 1785–95. Other words that entered Englishat around the same time include: edit, logrolling, nitrogen, preemptive, terrorist-y is a suffix of various origins used in the formation of action nouns from verbs (inquiry), also found in other abstract nouns (carpentry; infamy)