Pronunciation: (pru-jek'til, -tīl),[key] —n. 1. an object fired from a gun with an explosive propelling charge, such as a bullet, shell, rocket, or grenade.
2. a body projected or impelled forward, as through the air.
—adj. 1. impelling or driving forward, as a force.
2. caused by impulse, as motion.
3. capable of being impelled forward, as a missile.
4. Zool.protrusile, as the jaws of a fish.