propositus
/prəˈpɑzɪtəs/
noun
- The person who is the starting point or first identified case in a study of a family's medical or genetic history.
- In the family tree, the propositus is marked with an arrow to show where the study began.
- The doctor traced the genetic disorder back to the propositus, a woman who first showed symptoms in 1995.
- Researchers interviewed the propositus and then collected health data from all of his relatives.
Synonyms