The Nebula Award for Best Short Story is a literary award assigned each year by Science Fiction and Fantasy Writers Association (SFWA) for science fiction or fantasy short stories. A work of fiction is defined by the organization as a short story if it is less than 7,500 words; awards are also given out for longer works in the categories of novel, novella, and novelette. To be eligible for Nebula Award consideration a short story must be published in English in the United States. Works published in English elsewhere in the world are also eligible provided they are released on either a website or in an electronic edition. The Nebula Award for Best Short Story has been awarded annually since 1966. The award has been described as one of "the most important of the American science fiction awards" and "the science-fiction and fantasy equivalent" of the Emmy Awards.