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seropositive

[seer-oh-poz-i-tiv]
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adjective Medicine/Medical.
  1. showing a significant level of serum antibodies, or other immunologic marker in the serum, indicating previous exposure to the infectious agent being tested.
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Origin of seropositive

First recorded in 1930–35; sero- + positive
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for seropositive

seropositive

adjective
  1. (of a person whose blood has been tested for a specific disease, such as AIDS) showing a serological reaction indicating the presence of the disease
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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

seropositive in Medicine

seropositive

(sîr′ō-pŏzĭ-tĭv)
adj.
  1. Having a positive reaction to a serological test for a disease; exhibiting seroconversion.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.