ə̇ˈfyüzhən, eˈ-, ēˈ- noun
( -s )
Etymology: Middle English effusioun, from Middle French or Latin; Middle French effusion, from Latin effusion-, effusio, from effusus + -ion-, -io -ion
1. : the action or process of effusing or of being poured out
desirous to stop the effusion of British blood — C.G.Bowers
as
a. : escape of a fluid into a tissue or part (as the pleural cavity) by rupture of a vessel or by exudation through the walls : extravasation
b. : the flow of a gas through an aperture whose diameter is small as compared with the distance between the molecules of the gas
effusion through a plug of unglazed porcelain
2. : unrestrained expression of feelings
greeted her with great effusion — Olive H. Prouty
in the first effusion of self-admiration — J.A.Froude
3.
a. : something that is poured out with little or no restraint — used especially of evidences of self-expression
she bore with the effusions of his endless conceit — Jane Austen
literary and critical effusions — Rex Ingamells
b. : the liquid that escapes in extravasation