proband

[proh-band] /ˈproʊ bænd/
noun, Genetics.
1.
a patient who is the initial member of a family to come under study.
Also called propositus.
Origin
1925-30; < Latin probandus, gerundive of probāre to test, probe
Examples from the web for proband
  • The brothers and sisters of the proband are called siblings.
British Dictionary definitions for proband

proband

/ˈprəʊbænd/
noun
1.
another name (esp US) for propositus (sense 2)
Word Origin
C20: from Latin probandus, gerundive of probāre to test
Word Origin and History for proband
n.

1929, from Latin probandus, gerundive of probare "to make good, esteem good; make credible, show, prove, demonstrate" (see prove).

proband in Medicine

proband pro·band (prō'bānd')
n.
An individual or member of a family being studied in a genetic investigation. Also called index case, propositus.