- the escape of a fluid from its natural vessels into a body cavity.
- the fluid that escapes.
Origin of effusion
Examples from the Web for effusion
Florac took a little wine, replied "with effusion" to the toast which his excellent, his noble friend had just carried.The Newcomes|William Makepeace Thackeray
Some of your visitors will be personally known to you, and these you will greet with effusion.
The Earl of Salisbury judged it to be the effusion of a lunatic, but thought it well, nevertheless, to communicate it to the king.What was the Gunpowder Plot?|John Gerard
At least, no effusion of words could have made clearer and more distinct what he expressed.Frederick Chopin as a Man and Musician|Frederick Niecks
Danton, the cruel Danton, became sated with blood, and wished to stop its effusion.The History of England in Three Volumes, Vol.III.|E. Farr and E. H. Nolan
- the escape of blood or other fluid into a body cavity or tissue
- the fluid that has escaped
c.1400, "a pouring out," from Middle French effusion (14c.) and directly from Latin effusionem (nominative effusio) "a pouring forth," noun of action from past participle stem of effundere "pour forth, spread abroad," from ex- "out" (see ex-) + fundere "pour" (see found (v.2)). Figuratively, of speech, emotion, etc., from 1650s.