in·ter·de·pen·dent (ĭn'tər-dĭ-pěn'dənt) adj. Mutually dependent: "Today, the mission of one institution can be accomplished only by recognizing that it lives in an interdependent world with conflicts and overlapping interests"(Jacqueline Grennan Wexler). in'ter·de·pen'dence, in'ter·de·pen'den·cy n.