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seronegative

[seer-oh-neg-uh-tiv] /ˌsɪər oʊˈnɛg ə tɪv/
adjective, Medicine/Medical.
1.
showing no significant level of serum antibodies, or other immunologic marker in the serum, that would indicate previous exposure to the infectious agent being tested.
Origin of seronegative
1930-1935
First recorded in 1930-35; sero- + negative
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for seronegative

seronegative

/ˌsɪərəʊˈnɛɡətɪv/
adjective
1.
(of a person whose blood has been tested for a specific disease, such as AIDS) showing no serological reaction indicating the presence of the disease
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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seronegative in Medicine

seronegative se·ro·neg·a·tive (sēr'ō-něg'ə-tĭv)
adj.
Having a negative reaction to a serological test for a disease, especially to a test for syphilis or AIDS.

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