This week\u2019s word of the week is,\u201cTheme\u201d - noun. a subject of discourse, discussion, meditation, or composition; topic: The need for world peace was the theme of the meeting. a unifying or dominant idea, motif, etc., as in a work of art. a short, informal essay, especially a school composition. Music: a principal melodic subject in a musical composition. a short melodic subject from which variations are developed.