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

effusion

play
noun ef·fu·sion \i-ˈfyü-zhən, e-\

Simple Definition of effusion

  • : something that is said or expressed too much or with a lot of emotion

  • : a flow of liquid or gas

Source: Merriam-Webster's Learner's Dictionary

Full Definition of effusion

  1. 1 :  an act of effusing

  2. 2 :  unrestrained expression of words or feelings <greeted her with great effusion — Olive H. Prouty>

  3. 3 a (1) :  the escape of a fluid from anatomical vessels by rupture or exudation (2) :  the flow of a gas through an aperture whose diameter is small as compared with the distance between the molecules of the gas b :  the fluid that escapes

Examples of effusion in a sentence

  1. Her poetic effusions became tiresome.



15th Century

First Known Use of effusion

15th century


Medical Dictionary

effusion

play
noun ef·fu·sion \i-ˈfyü-zhən, e-\

Medical Definition of effusion

  1. 1a:  the escape of a fluid from anatomical vessels by rupture or exudationb:  the flow of a gas through an aperture whose diameter is small as compared with the distance between the molecules of the gas

  2. 2:  the fluid that escapes by extravasation—see pleural effusion




Learn More about effusion


Seen and Heard

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

WORD OF THE DAY

to lessen in amount, effect, or force

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

fox-in-summer-forest

Which of these is a synonym of inchoate?

experimental formless massive frightening
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