a pathogenic bacterium that has developed immunity to antibiotics, or an insect that has developed immunity to insecticides.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for superbug
Contemporary Examples of superbug
Our visionary scientists have found the Achilles heel of yet another enemy of the State—the Superbug!The Fake Superbug Cure
June 21, 2014
informal an infective microorganism that has become resistant to antibiotics
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
Any of various disease-causing bacteria that develop a resistance to drugs normally used to control or eradicate them.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.