Pulp fiction refers to a genre of popular fiction that emerged in the early 20th century, characterized by its sensational stories, vivid characters, and fast-paced plots. Often published in inexpensive magazines made from cheap wood pulp paper, these stories typically feature crime, adventure, science fiction, and horror elements. Pulp fiction played a significant role in shaping modern genre fiction by appealing to mass audiences and influencing various literary forms and adaptations.