facsimile editionAn exact reproduction of an original book depicting the text and the book's physical appearance.
fair conditionA worn book with defects such as a torn dust jacket, foxing, or loose binding, etc.
fine conditionNearly new, with slight signs of aging, but no defects.
first editionThe first printing of the first edition (as far as collectors are concerned).
flyleafUnprinted pages (other than endpapers) which may appear at the front or back of a book.
folioDescription of the size of a book: about 15 inches high (Fo).
fore edgeThe front of a book, considering the spine to be the back of a book.
fore-edge paintingA form of book decoration popular in the late eighteenth century which displays a painting when the books pages are fanned.
fortyeightmoDescription of the size of a book: about 4 inches high (48mo).
foxedDiscolored, usually with reddish-brown spots, especially the leaves of a book.
frontispieceIllustration which faces the title page.