cause to become widely known
"spread information"
"circulate a rumor"
"broadcast the news"
To spread over or through as in air, water, or other matter, especially by fluid motion or passive means.
"The scent of fresh coffee quickly diffused throughout the kitchen, filling every corner before anyone had even opened a window."
Everywhere or throughout everything; not focused or concentrated.
"The fog had become so diffuse that it was impossible to see more than a few feet in any direction."