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

Medical Dictionary

eruption

play
noun erup·tion \i-ˈrəp-shən\

Medical Definition of eruption

  1. 1:  an act, process, or instance of erupting <the eruption of the tooth from the gum>; specifically :  the breaking out of an exanthem or enanthem on the skin or mucous membrane (as in measles)

  2. 2:  something produced by an act or process of erupting: asa:  the condition of the skin or mucous membrane caused by eruptingb:  one of the lesions (as a pustule) constituting this condition





Seen and Heard

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

WORD OF THE DAY

February 10, 2016

to put in good humor

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

2.2 pounds 100 pounds 16.96 pounds 196.5 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ