Complex sentence: The term "uninformative prior" is somewhat of a misnomer; often, such a prior might be called a "not very informative prior", or an "objective prior", i.e. one that's not subjectively elicited.
Split into simpler sentences: The term "uninformative prior" is somewhat of what's known as a "misnomer". Such a prior might also be called a "not very informative prior", or an "objective prior", i.e. one that's not subjectively elicited.