Something protracted has been drawn out, usually in a tedious way. Protracted things are long and seem like they're never going to end.
Anything protracted is lasting longer than you would like. A speech that seems to go on forever is protracted. If an employer and a union can't reach an agreement, there could be a protracted strike. Before a movie, the previews are almost always protracted — they never seem to stop. If something is long and annoying, and there's no good reason it couldn't be shorter, it's protracted.