Andromeda strain

noun
  1. an infectious pathogen that mutates unpredictably into new forms and shows extreme resistance to destruction by conventional means.

Origin of Andromeda strain

First recorded in 1970–75; after such a pathogen in a novel of the same name (1969) by U.S. author Michael Crichton (born 1942)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018