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 a feeling or situation full of activity, joy, exhilaration, or upheaval. One thing about excitement â it sure isn't boring. There are a few types of excitement, but they're all exciting â they get your attention. If you can't wait for your birthday, you're feeling a happy kind of excitement. A sleeping dog is resting â no excitement there.