Having the power of directing; causing to take or occupy a certain direction.Pointing out the proper direction; guiding; prescribing; indicating.Capable of being directed, managed, or handled.Dealing with direction: as, directive algebra.n. In grammar, a syntactic case expressing direction toward an object: also called transitional.n. In a sea-anemone or coral polyp, a mesentery which forms one of the boundaries of the intermesenteric space at one of the poles of the principal axis.