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a test for the diagnosis of typhoid fever, based on agglutination of Salmonella typhosa by dilutions of the patient's serum.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A test of blood serum that uses an agglutination reaction to diagnose typhoid fever.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Widal reaction, Widal test (vē-dal′)
[Georges Fernand Isidore Widal, Fr. physician, 1862–1929]
An agglutination test for typhoid fever.
Medical Dictionary, © 2009 Farlex and Partners
Widal testA serological agglutination reaction of Salmonella typhi and similar organisms by the patient's serum, used to diagnose typhoid and paratyphoid fevers. (George Fernand Isadore Widal, 1862–1929, Algerian born French pathologist).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005