Definitions for "Midlist"
Titles on a publisher's list that are not expected to be big sellers, but might introduce a new author or find audiences in niche markets. Midlist books are often mainstream books, as opposed to books that neatly fit into genres.
Books with a strong intellectual or artistic bent which have a chance of significant success but are not assumed to be likely bestsellers.
A term applied to books that sell in only moderate numbers, a category that covers approximately 99 percent of the entire sales range.