A literary work based partly or wholly on fact but written as if it were fiction(noun)
WordNet. Princeton University. 2010.
Use "fictionalisation" in a sentence
"The fictionalisation version could become a trilogy."
"It was a shame to find out about the fictionalisation of the Documentary just to make it more entertaining, but it is good to see that these two are still at it."
"This is veiled autobiography, not a fictionalisation of the career of Lloyd George."