G 

Galley

 The earliest printing of a work used by the proofreader and author to check for errors. Galleys are often printed on long continuous strips of paper. Sometimes the term is used interchangeably, although incorrectly, with the term advance reading copy. Also known as galley proof. See also proofs.

Galley

 bound edition of a work available for review and publicity purposes before publication.

Galley

 The pre-publication copies sent to the author for final proofreading or to reviewers for pre-publication reviews.

Galley Proof

 The typeset composition of uncorrected pages before formatted into a book, allowing the reader to detect errors. A galley copy can be inexpensively bound and sent to reviewers before publication.

Genre

 sales and marketing category into which the title falls (e.g. mystery, suspense, horror, how-to, self-help.)

Genre

 A specific category of literature, marked by a distinctive style form or content.

Ghost Writer

 a writer or co-writer who is not credited on the work.

Gilt Edges

 The edges of the pages of a book after they have been cut smooth and colored, usually with gold paint. See also all edges gilt. 

Glassine

 A strong, thin, glazed, semi-transparent paper that used to make protective covers for books because it is, among other durable characteristics, grease and water resistant.

Gnawed

 Refers to the condition of a book; chewed-on edges or corners of a book.

Good

 See condition guide.

Gouge

 Refers to the condition of a book; an unintentional nick or hole in the cover of a book, or on its spine. Or in bookbinding, a single-line finishing tool that is used to create either blind or gold decoration on the covers but not on the spine of a book.

Graphics

 The non-type parts of a book such as drawings, illustrations, photographs, charts, etc. that are used to enhance the content of a book.

Gutter

 The white space formed by the inner margins of two facing pages (near the spine) in a bound book, journal, or newspaper.

Gutter

 The white space formed by the inner margins of two facing pages.