A factoid is a dubious assertion made, often in the form of a statistic, but its origin is not given.

It was from that dubious assertion that Justice White dissented.

She called it a "dubious assertion" with no reliable documentary proof.

Some might find this a dubious assertion considering that Holyfield's record is 28-0.

It's already caused broadcasters to make the obvious and dubious assertion that the Chase is "closer than ever."

Politicians of all parties resort to dubious statistical assertions.

It is too bad that his dubious assertions undermine his believability.

Certainly, a legal scholar could skewer many of the dubious assertions Lessig makes while defending "open access."

Not only is that a dubious assertion, but no poll is cited to back it up.

Item: no context for the companies' dubious assertion that they expect to make a profit early next year.