Koch's phenomenon

noun
variants: also Koch phenomenon

Medical Definition of Koch's phenomenon

: the response of a tuberculous animal to reinfection with tubercle bacilli marked by necrotic lesions that develop rapidly and heal quickly and caused by hypersensitivity to products of the tubercle bacillus

Comments on Koch's phenomenon

What made you want to look up Koch's phenomenon? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to form ideas or theories about something

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!