superbug

[ soo-per-buhg ]
/ ˈsu pərˌbʌg /

noun Informal.

a pathogenic bacterium that has developed immunity to antibiotics, or an insect that has developed immunity to insecticides.

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British Dictionary definitions for superbug

superbug
/ (ˈsuːpəˌbʌɡ) /

noun

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

Medical definitions for superbug

superbug
[ sōōpər-bŭg′ ]

n.

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.