A comic book (often shortened to simply comic and sometimes called a funny book, comic paper or comic magazine) is a magazine made up of narrative artwork, virtually always accompanied by dialog (usually in word balloons, emblematic of the comic book artform) and often including brief descriptive prose. The first comic book appeared in the United States in 1934, reprinting the earlier newspaper comic strips, which established many of the story telling devices used in comics today. The term "comic book" arose because the first comic books reprinted humor comic strips, but despite their name, comic books are not usually humorous; most modern comic books tell adventure stories, often about super heroes.

American comics

main: American comic book

Since the introduction of the comic book format in 1934 with the publication of Famous Funnies, the United States has been the leading producer, with only the British comic and Japanese manga as close competitors in terms of quantity of titles. The majority of all comic books in the U.S. are marketed to young adult readers, though they also produce titles for young children as well as adult audiences.

Cultural historians divide the career of the comic book in the U.S. into several ages or historical eras: the Golden Age, the Silver Age, the Bronze Age, and the Modern Age. The exact boundaries of these eras, the terms for which originated in the fandom press, is a debatable point among comic book historians.

The Silver Age of Comic Books is generally considered to date from the first successful revival of the dormant superhero form — the debut of Robert Kanigher and Carmine Infantino's Flash in Showcase #4 (September-October 1956) — and lasts through the early 1970s, during which time Marvel Comics revolutionized the medium with such naturalistic superheroes as Stan Lee and Jack Kirby's Fantastic Four and Stan Lee and Steve Ditko's Spider-Man. There is less agreement on the beginnings of the Bronze and Modern ages. Some suggest that the Bronze Age is still taking place. Starting points that have been suggested for the Bronze Age of comics are Roy Thomas and Barry Windsor-Smith's Conan #1 (October 1970), Denny O'Neil and Neal Adams' Green Lantern/Green Arrow #76 (April 1970) or Stan Lee and Gil Kane's Amazing Spider-Man #96 (May 1971) (the non-Comics Code issue). The start of the Modern Age (occasionally referred to as the Iron Age) has even more potential starting points, but is generally agreed to be the publication of Frank Miller's Batman: The Dark Knight Returns graphic novel and Alan Moore's Watchmen by DC Comics in 1986, as well as the publication of DC's Crisis on Infinite Earths, with Marv Wolfman as writer and George Pérez on the pencils.