Wiktionary
n. A religious belief system which has become generally recognized as having independent status from any other religion, but which nonetheless may have many, sometimes mutually antagonistic, sects or denominations.
Usage examples of "world religion".
You let me cover the one-world religion story, the rebuilding of the temple story, the two preachers at the Wailing Wall story, the vote for a new pope story, and another one in your bailiwick I haven't told anyone about yet, and I'll see to it you get to do the cover story on the treaty.
While vast barriers may seem to stretch between a local, single-focus contention of pseudoscience and something like a world religion, the partitions are very thin.
The one-world religion meeting is dry as dust, and the thing will never work anyway.