Learn how to say Effusion correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word effusion:
an unrestrained outpouring in speech or words
the act or process of being poured out
something that is poured out
the flow of a gas through a small aperture under pressure, esp when the density is such that the mean distance between molecules is large compared to the diameter of the aperture
the escape of blood or other fluid into a body cavity or tissue
the fluid that has escaped