[ pruh-poz-i-tuh s ]
/ prəˈpɒz ɪ təs /

noun, plural pro·pos·i·ti [pruh-poz-i-tahy] /prəˈpɒz ɪˌtaɪ/.

Law. the person from whom a line of descent is derived on a genealogical table.
Genetics. proband.

Origin of propositus

1925–30; < New Latin, special use of past participle of Latin prōpōnere to set forth, propound Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for propositus


feminine proposita (prəˈpɒzɪtə)

/ (prəˈpɒzɪtəs) /

noun plural -ti (-ˌtaɪ) or feminine -tae (-tiː)

law the person from whom a line of descent is traced
Also called (esp US): proband med the first patient to be investigated in a family study, to whom all relationships are referred

Word Origin for propositus

from New Latin, from Latin prōpōnere to set forth; see propound
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for propositus

[ prō-pŏzĭ-təs ]

n. pl. pro•pos•i•ti (-tī′)

A premise; an argument.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.