[F. format, (according to Littré ad. L. (liber) formātus, (a book) formed in such or such a way).] Shape and size of a book, e.g., octavo, quarto, etc.
1840. Moore, Mem. (1856), VII. 272. There is some chance of their being able to bring out the History, some time or other, in a better shape than that vile Lardnerian format.
1883. The Saturday Review, LV. 5 May, 580/1. The book is written with a power not undeserving of M. Calmann-Lévys pretty square format, in which it appears.
Mod. Prospectus, Format and paper of present Prospectus.