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n. pl. pro·pos·i·ti (-tī′)
1. Law The person who is the subject of a question or action.
2. A person to whom descendants are commonly related.
3. See index case.
[Latin prōpositus, past participle of prōpōnere, to set forth; see propose.]
propositus(prəˈpɒzɪtəs) or feminine
n, pl -ti (-ˌtaɪ) or (feminine) -tae (-tiː)
1. (Law) law the person from whom a line of descent is traced
2. (Medicine) med Also called (esp US): proband the first patient to be investigated in a family study, to whom all relationships are referred
[from New Latin, from Latin prōpōnere to set forth; see propound]
the person from whom a line of descent originates.See also: Ancestors