Definition of "theme"
- noun
- A subject of a talk or an artistic piece; a topic. 
- A recurring idea; a motif. 
- The main melody of a piece of music, especially one that is the source of variations. 
- The collection of color schemes, sounds, artwork etc., that "skin" an environment towards a particular motif. 
- 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 being talked about, as opposed to rheme. 
- A regional unit of organisation in the Byzantine empire. 
- verb
- To apply a theme to; to change the visual appearance and/or layout of (software). 
- Sources