Noun
1. the subject matter of a conversation or discussion;
"he didn't want to discuss that subject""it was a very sensitive topic""his letters were always on the theme of love"2. a unifying idea that is a recurrent element in a literary or artistic work;
"it was the usual `boy gets girl' theme"3. (music) melodic subject of a musical composition;
"the theme is announced in the first measures""the accompanist picked up the idea and elaborated it"4. an essay (especially one written as an assignment);
"he got an A on his composition"5. (linguistics) the form of a word after all affixes are removed;
"thematic vowels are part of the stem"