Main Entry: pseu·do·re·ac·tion Pronunciation: -rE-'ak-sh&n Function: noun : a reaction following the injection of a toxin (asin the Schick test) which is caused by something (as impurities in the test medium) other than the toxin itself
pseudoreaction pseu·do·re·ac·tion (s&oomacr;'dō-rē-āk'shən) n. A reaction not caused by the substances used in a given test but rather by impurities or other materials in the test medium; a false reaction.
