Adjective
(advertising, of a television advertisement) Running for a relatively short time, typically no more than two minutes.
(journalism, broadcasting) Relatively short and punchy, lacking detail or in-depth analysis.
a shortform article; a shortform news broadcast
Its two former members, Michael Bossier and John Elk, formed Spaghetti Jam in San Francisco's Old Spaghetti Factory in 1976, where shortform improv and Harolds were performed through 1983. Source: Internet
Modern improvisational comedy, as it is practiced in the West, falls generally into two categories: shortform and longform. Source: Internet
The shortform improv comedy television series Whose Line Is It Anyway? Source: Internet