1. A reference to the capacity for recognizing emotions and human passions: Pathognomic feelings, like excitement or pain, can be noticed in a person's face.
2. Relating to the science of the signs and symptoms of diseases: When the doctor examined Judy, he noticed the typical pathognomic indications that pointed to a particular disease that was circulating among children in the area.

Such distinctive visual and pathognomonic clues can indicate a certain illness on which a diagnosis can be made.