Compilation/ˌkɑːmpɪˈleɪʃn/ Definition 1 of 2Pro Tip 1/3Varied Contents A compilation typically includes diverse items chosen for a specific purpose or theme. The compilation book of short stories featured various genres. Pro Tip 2/3Not Random Items in a compilation are selected carefully, not just randomly thrown together. The documentary used a compilation of historic footage. Pro Tip 3/3Thematic Unity Compilations often revolve around a central theme, topic, or artist. The film festival's compilation focused on climate change.