Which term describes a religious organization that allows no toleration of other religions?

The term that accurately describes a religious organization that allows no toleration of other religions is "ecclesia." This term refers to a formal and established church that not only has strong connections to the state but also typically represents the dominant religious tradition within a society. An ecclesia often has an exclusive claim to the truth and may not tolerate other religious beliefs, viewing them as inferior or invalid.

In contrast, a church might be more inclusive and allow for variations in belief and practice within its larger structure. A sect usually refers to a smaller, often more radical group that has broken away from a larger religious tradition, which may or may not maintain exclusivity. A cult typically describes a social group defined by its unusual religious beliefs or practices, and while these groups may be intolerant of other beliefs, the term is often used in a pejorative sense and lacks the structure and legitimacy that ecclesia implies. Understanding these distinctions helps clarify the implications and characteristics of different religious organizations.