Definition
Effusion refers to something pouring out or forth, often in an unrestrained way. Think of it as an overflowing of emotions, words, or even liquids. Unlike a carefully measured pour, an effusion is abundant and spontaneous. It suggests a lack of control or restraint in expression. Imagine a volcano erupting with lava; that's an effusion of molten rock. It can describe an outpouring of feelings at a concert or a gushing of water from a broken pipe.