dif·fuse¹/dɪ`fjuz; dɪˈfjuːz/ v 1 [I,T] to make ideas, information etc available to a lot of people 传播〔思想、消息等〕 2 [I,T] to make heat, light etc spread over a large area （使）〔热量、光等〕散播，扩散 3 [T] to make a bad feeling less strong 缓解，缓和〔不良情绪〕: Maria tried to diffuse the tension by telling jokes. 玛莉娅讲了几个笑话，想缓和这紧张的气氛。