"Circularization" is a word that refers to the process of sending letters, documents or reports to a large number of people at the same time. Synonyms for this word include "broadcasting," "disseminating," "circulating," "propagating," "spreading," "dissemination," "diffusion," and "distribution." All of these words convey the idea of taking a message and offering it to a larger audience. Whether it's a press release, a newsletter, or a memo, the goal of circularization is to ensure that a message reaches as many people as possible. Using synonyms for this word can help keep things fresh and engaging, while still conveying the same meaning.