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[kuh n-tey-juh m, -jee-uh m] /kənˈteɪ dʒəm, -dʒi əm/
noun, plural contagia
[kuh n-tey-juh, -jee-uh] /kənˈteɪ dʒə, -dʒi ə/ (Show IPA).
the causative agent of a contagious or infectious disease, as a virus.
Origin of contagium
1645-55; < Latin, equivalent to contāg- (see contagion) + -ium -ium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for contagium


noun (pl) -gia (-dʒɪə)
(pathol) the specific virus or other direct cause of any infectious disease
Word Origin
C17: from Latin, variant of contāgiōcontagion
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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contagium in Medicine

contagium con·ta·gium (kən-tā'jəm)
n. pl. con·ta·gia (-jə)
The direct cause, such as a bacterium or virus, of a communicable disease. Also called contagion.

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