Extrait de parfum, also known as pure perfume or parfum, is the most concentrated form of fragrance. It typically contains between 20-40% (aprox) fragrance concentration, and sometimes even higher. This makes the scent even more potent and longer-lasting than EDPs.
An extrait will stay on your skin for far longer than an EDP, but it may not project as much, so although it might not kick open a door of a party and announce itself by shouting into the room, it will linger longer, warming with your body throughout the day and night (and into the next day!)