sem·i·doc·u·men·ta·ry 
(sĕm′ē-dŏk′yə-mĕntə-rē, sĕm′ī-)
(sĕm′ē-dŏk′yə-mĕntə-rē, sĕm′ī-)n. pl. sem·i·doc·u·men·ta·ries
A book, movie, or television program presenting a fictional story that incorporates many factual details or actual events.
sem′i·doc′u·menta·ry adj.