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[pruh-poz-i-tuh s] /prəˈpɒz ɪ təs/
noun, plural propositi
[pruh-poz-i-tahy] /prəˈpɒz ɪˌtaɪ/ (Show IPA)
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 Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for propositus


noun (pl) -ti (-ˌtaɪ), (fem) -tae (-tiː)
(law) the person from whom a line of descent is traced
(med) Also called (esp US) proband. the first patient to be investigated in a family study, to whom all relationships are referred
Word Origin
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
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propositus in Medicine

propositus pro·pos·i·tus (prō-pŏz'ĭ-təs)
n. pl. pro·pos·i·ti (-tī')

  1. See proband.

  2. A premise; an argument.

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