[kraws-ree-ak-shuh n-kros-]
  1. an immunologic reaction between a given antigen and an antibody or lymphokine that is specific for a different antigen resembling the first one.

Origin of cross-reaction

First recorded in 1945–50
Related formscross-re·ac·tive, adjectivecross-re·ac·tiv·i·ty, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

cross reaction in Medicine

cross reaction

  1. A specific reaction between an antiserum and an antigen complex other than the complex that caused the production of the specific antibodies of the antiserum.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.