- In the terminology of sf FANDOM, this expression - once colloquial but enshrined since 1983 in the constitution of the World Science Fiction Society, the body that administers the HUGOs - means a semiprofessionalmagazine as opposed to an amateur magazine, or FANZINE. According to that constitution a magazine with a circulation of more than 10,000 is a professional magazine. A semiprozine must therefore have a circulation of less than 10,000. It must also, according to the constitution, have published at least 4 issues (at least 1 in the previous calendar year) and fulfil 2 of the following 5 criteria: have an average press run of at least 1000 copies; pay its contributors and/or staff in other than copies of the publication; provide at least half the income of any one person; have at least 15% of its total space occupied by advertising; announce itself to be a semiprozine. Charles N. BROWN, editor of LOCUS magazine (which has won numerous Hugos for Best Semiprozine), states additionallyin his regular commentaries on magazine publishing that the frequency of a semiprozine should be at least quarterly, and that unlike a professional magazine it should not have national newsstand circulation. A number of the most important magazines of comment in the fields of sf and fantasy, and several of the magazines that publish fiction, are or have been semiprozines.PN
Science Fiction and Fantasy Encyclopedia. Academic. 2011.