Serial segment (7)
I believe the answer is:
episode
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">serial segment</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for episode that I've seen before include "Distinctive incident" , "A chapter or incident" , "Instalment of a TV series" , "Incident in a story or part of a serial" , "Part of TV series" .)