Manga (in kanji 漫画; in hiragana まんが; in katakana マンガ, Manga) is the Japanese word for comics (sometimes called komikku コミック) and print cartoons. In their modern form, manga date from shortly after World War II but have a long, complex history in earlier Japanese art.
In Japan, manga are widely read by people of all ages, so that a broad range of subjects and topics occur in manga, including action-adventure, romance, sports and games, historical drama, comedy, science fiction and fantasy, mystery, horror, sexuality, and business and commerce, among others.
Since the 1950s, manga have steadily become a major part of the Japanese publishing industry, representing a 481 billion yen market in Japan in 2006 (approximately $4.4 billion dollars). Manga have also become increasingly popular worldwide. In 2006, the United States manga market was $175–200 million. Manga are typically printed in black-and-white, although some full-color manga exist (e.g. Colorful manga, not the anime series).
In Japan, manga are usually serialized in telephone book-size manga magazines, often containing many stories each presented in a single episode to be continued in the next issue. If the series is successful, collected chapters may be republished in paperback books called tankōbon.
A manga artist (mangaka in Japanese) typically works with a few assistants in a small studio and is associated with a creative editor from a commercial publishing company. If a manga series is popular enough, it may be animated after or even during its run, although sometimes manga are drawn centering on previously existing live-action or animated films (e.g. Star Wars).
Courtesy of Wikipedia