What is the meaning of theme?

noun

• The subject matter of a conversation or discussion.
  • usage: "he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
  • synonyms: subject, topic
• A unifying idea that is a recurrent element in literary or artistic work.
  • usage: "it was the usual `boy gets girl' theme"
  • synonyms: motif
• Music) melodic subject of a musical composition. (
  • usage: "the theme is announced in the first measures"; "the accompanist picked up the idea and elaborated it"
  • synonyms: melodic theme, musical theme, idea
• An essay (especially one written as an assignment. )
  • usage: "he got an A on his composition"
  • synonyms: composition, paper, report
• Linguistics) the form of a word after all affixes are removed. (
  • usage: "thematic vowels are part of the stem"
  • synonyms: root, root word, base, stem, radical

verb

• Provide with a particular theme or motive.
  • usage: "the restaurant often themes its menus"