Factoid

fac·toid ( P ) Pronunciation Key (fktoid)
n.

1. A piece of unverified or inaccurate information that is presented in the press as factual, often as part of a publicity effort, and that is then accepted as true because of frequent repetition: “What one misses finally is what might have emerged beyond both facts and factoidsa profound definition of the Marilyn Monroe phenomenon” (Christopher Lehmann-Haupt)