diffuse

1. (transitive) To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.Examples: "The small window diffuses light throughout the room."; "Ideas are easily diffused with the help of technology."; "We do not know by whom the insufficiency of the year of 365 days was first discovered; we find this knowledge diffused among all civilized nations, and various artifices used in making the correction."transitive

2. (intransitive) To be spread over or through as in air, water, or other matter, especially by fluid motion or passive means.Examples: "Food coloring diffuses in water."; "The riot diffused quite suddenly."intransitive