leadin
Leadin, also written lead-in, is a term used in journalism, broadcasting, and media to describe material that introduces or transitions into a main piece. It may be a short spoken line, a written teaser, or a brief segment that prepares the audience for what follows. In broadcasting, a lead-in is often a spoken announcer line or a short musical cue that introduces a program, segment, or advertisement, helping to set context, pace, and mood.
In print and online journalism, the term can refer to the introductory sentence or paragraph that precedes
In digital media, lead-ins frequently appear as teaser lines, headlines, or summaries designed to entice readers
Etymology and usage notes: Lead-in derives from the idea of leading into the main content. Style guides