Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

plague

play
noun \ˈplāg\

Medical Definition of plague

  1. 1:  an epidemic disease causing a high rate of mortality :  pestilence <a plague of cholera>

  2. 2:  a virulent contagious febrile disease that is caused by a bacterium of the genus Yersinia (Y. pestis synonym Pasteurella pestis), that occurs in bubonic, pneumonic, and septicemic forms, and that is usually transmitted from rats to humans by the bite of infected fleas (as in bubonic plague) or directly from person to person (as in pneumonic plague)—called also





Seen and Heard

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

WORD OF THE DAY

the Celtic May Day festival

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

oily prompt angry maudlin
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ