Print is a modeling term referring to a "photograph", The standard size used by models to fit their portfolio is 9 inches by 12 inches (9" X 12").
Other /More definition:
Print refers to a fabric with a design applied to it. Prints date back thousands of years, and most countries have prints that are native to their land. Although many prints, like "Batik are most beautiful when done by hand, technology has enabled the development of new printed effects, ensuring that prints will continue to evolve for years to come
List of books: Print