Diffusion (noun). the act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion. Diffusion (noun). the act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body.
Learner's definition of EXCITEMENT. 1. [noncount] : a feeling of eager enthusiasm and interest : the state of being excited. Our excitement was building/growing/mounting as the end of the game approached. His hands shook with excitement. The child cried out in excitement.
Excitement is defined as a feeling of enthusiasm, eagerness or exhilaration, or is defined as something that causes such a feeling. The way a child feels on Christmas morning waiting to open his presents is an example of excitement. Christmas morning, which inspires exhilaration, is an example of an excitement. excitement. excitement.