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.
a feeling of excitement or anxiety when you do not know what will happen next [âª tension] in suspense. They kept us in suspense for over two hours. Come on then, tell me what happened; the suspense is killing me (=I feel very excited or anxious because I do not know what will happen next). She couldn't bear the suspense a moment longer. suspense novel/story/movie etc (=one which is exciting because you do not know what will happen next)