Another word could be 'fictionette'. It's not as commonly used as'short story' but it still refers to a short form of fiction. It often has a simple plot and a limited number of characters, much like a short story.
The phrase is rather unclear in terms of what the actual short form should be. If we consider common abbreviations in literature, 'fic' is sometimes used for 'fiction'. However, this might not be what is meant by this rather complex phrase. It could be that a new or specialized term is being referred to, but without more context, it's difficult to say for sure.
As I said before, if we consider 'fiction', 'fic' could be an example. But for the whole 'word for short form of fiction', there are no common examples that I know of.
Another term is 'fiction'. While 'novel' specifically refers to a long work of prose, 'fiction' encompasses all made - up stories, including short stories, novellas, and novels. So in a sense, all novels are fiction, but not all fiction is a novel.
A third word that can be used instead of fiction is 'fable'. However, a fable often has a moral lesson within it, which is not always the case for all types of fiction. But in a general sense, it can be considered as another word for fiction. Fables are fictional tales that usually involve animals or inanimate objects as characters, and they are passed down through generations to teach people certain values or life lessons.
Tale. It is a very common word used instead of short story. Tales often have a simple plot and are usually passed down through generations orally or in written form.
Derivative work can also be considered another word for fan fiction. Fan fiction is often based on existing works, like a book or a movie, and creates a new story using the elements from that original work, which is what a derivative work essentially is.
Another term for it is'speculative fiction'. This encompasses a wide range of fictional works that include elements of the fantastic, such as science fiction, horror, and of course, fantasy. It allows for a great deal of creativity and exploration of the unknown, much like fantasy fiction. For example, works that involve time travel or alternate realities can be considered speculative fiction, as well as those with wizards and dragons in a made - up land.