
In the television industry, a lower third is a graphic placed in the title-safe lower area of the screen, though not necessarily the entire lower third of it, as the name suggests. Lower thirds are most commonly found in television news production, although they also appear in documentaries and even have begun to make appearances in amateur videos...
Found on
http://en.wikipedia.org/wiki/Lower_third

In documentary film and news, the name of a person that appears in the lower third of the frame.
Found on
http://lessonbucket.com/glossary/
No exact match found.