Theme meaning : A subject of a talk or an artistic piece; a topic. A recurring idea; a motif. An essay written for school. The main melody of a piece of music, especially one that is the source of variations. A song, or a snippet of a song, that identifies a film, a TV program, a character, etc. by playing at the appropriate time. The collection of color schemes, sounds, artwork etc., that "skin" an environment towards a particular motif. (grammar) The stem of a word. Thematic relation of a noun phrase to a verb. Theta role in generative grammar and government and binding theory. Topic, what is generally being talked about, as opposed to rheme. A regional unit of organisation in the Byzantine empire. To give a theme to. To apply a theme to; to change the visual appearance and/or layout of (software).